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Global assessment of undiscovered copper resources

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Dicken, Connie L.
Originator: Dunlap, Pamela
Originator: Parks, Heather L.
Originator: Hammarstrom, Jane M.
Originator: Zientek, Michael L.
Originator: Johnson, Kathleen M.
Title: Global assessment of undiscovered copper resources
Publication_Date: 2016
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-Z
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Online_Linkage: https://mrdata.usgs.gov/sir20105090z/
Description:
Abstract:
Deposits, prospects, and permissive tracts for porphyry and sediment-hosted copper resources worldwide, with estimates of undiscovered copper resources.

pCu_tracts contains vector data (polygon) for 192 tracts permissive for porphyry copper mineralization. The tracts outline principal areas of the world that have potential for undiscovered porphyry copper resources; the tracts were used to estimate the probable amounts of those resources at depths within 1 km below the earth's surface. Attributes include tract identifiers, tract name, location coordinates, country and state or province, grade/tonnage model used to assess tract, a brief description of the basis for tract delineation, age, assessment results, and multiple economic results.

pCu_deps_pros includes data on porphyry copper deposits and prospects compiled from eighteen regional datasets that were prepared as part of the U.S. Geological Survey's Global Mineral Resource Assessment Project over a period of years ranging from 2008 through 2015. These data were reviewed and edited to both correct errors and to better fit a standard data model. Major enhancements include more specific age information, and the rounding of calculated values for tonnage and the Au/Mo ratio to the nearest significant figure. In addition, all references cited were compiled; full references were standardized and URLs were included where available.

Copper resources are reported for related deposits in close proximity to each other; grade and tonnage information was combined for these deposits and is reported in the pCu_group table. The feature class pCu_groups contains a small, select set of 47 records each of which represents a group of related deposits and prospects; data were compiled from the feature class pCu_deps_pros. Location coordinates can represent a generalized location or a specific mineralized site; for all of the deposits in the group, grade represents the weighted average while tonnage represents the total ore tonnage.

sedCu_tracts includes polygons that represent 48 permissive tracts for sediment-hosted copper deposits of the world. These are the principal areas in the world that have potential for undiscovered sediment-hosted copper resources. Those with a quantitative estimate were assessed to depths of 1 to 2.5 km below the earth's surface.

sedCu_deps_pros contains points that represent sediment-hosted copper deposits and prospects of the world. Data were compiled from nine regional assessment reports into two datasets that provide data for use in an assessment of undiscovered sediment-hosted stratabound copper resources of the world. These data describe deposits, prospects, and other mineralized sites.
Purpose:
These data are intended to provide, for porphyry copper and sediment-hosted copper deposits, a globally consistent and comprehensive analysis of undiscovered resources. They are intended to equip all nations with a regional and global context for evaluating their mineral resources, planning for new mineral exploration and anticipating the economic, environmental, and social impacts of mineral development, and making land use decisions.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2016
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -180
East_Bounding_Coordinate: 180
North_Bounding_Coordinate: 73.91
South_Bounding_Coordinate: -55.98
Access_Constraints: none
Use_Constraints: none
Keywords:
Theme:
Theme_Keyword_Thesaurus: Alexandria Digital Library Feature Type Thesaurus
Theme_Keyword: mineral deposit areas
Theme_Keyword: mine sites
Place:
Place_Keyword_Thesaurus: Common geographic areas
Place_Keyword: fAF = Afghanistan
Place_Keyword: fUS02 = Alaska
Place_Keyword: fAO = Angola
Place_Keyword: fAR = Argentina
Place_Keyword: fUS04 = Arizona
Place_Keyword: fAM = Armenia
Place_Keyword: fAS = Australia
Place_Keyword: fAJ = Azerbaijan
Place_Keyword: fBE = Belgium
Place_Keyword: fBC = Botswana
Place_Keyword: fBU = Bulgaria
Place_Keyword: fBM = Burma
Place_Keyword: fUS06 = California
Place_Keyword: fCB = Cambodia
Place_Keyword: fCA = Canada
Place_Keyword: fCI = Chile
Place_Keyword: fCH = China
Place_Keyword: fCO = Colombia
Place_Keyword: fUS08 = Colorado
Place_Keyword: fCG = Congo (Democratic Republic of the)
Place_Keyword: fCS = Costa Rica
Place_Keyword: fCU = Cuba
Place_Keyword: fDR = Dominican Republic
Place_Keyword: fEC = Ecuador
Place_Keyword: fEG = Egypt
Place_Keyword: fFJ = Fiji
Place_Keyword: fFI = Finland
Place_Keyword: fFR = France
Place_Keyword: fGG = Georgia
Place_Keyword: fGM = Germany
Place_Keyword: fGR = Greece
Place_Keyword: fGL = Greenland
Place_Keyword: fHA = Haiti
Place_Keyword: fHO = Honduras
Place_Keyword: fHU = Hungary
Place_Keyword: fUS16 = Idaho
Place_Keyword: fID = Indonesia
Place_Keyword: fIR = Iran
Place_Keyword: fIS = Israel
Place_Keyword: fIT = Italy
Place_Keyword: fJM = Jamaica
Place_Keyword: fJO = Jordan
Place_Keyword: fKZ = Kazakhstan
Place_Keyword: fKS = Korea, Republic of
Place_Keyword: fKG = Kyrgyzstan
Place_Keyword: fLA = Laos
Place_Keyword: fMK = Macedonia
Place_Keyword: fMY = Malaysia
Place_Keyword: fMX = Mexico
Place_Keyword: fUS26 = Michigan
Place_Keyword: fMG = Mongolia
Place_Keyword: fUS30 = Montana
Place_Keyword: fWA = Namibia
Place_Keyword: fUS32 = Nevada
Place_Keyword: fUS35 = New Mexico
Place_Keyword: fNU = Nicaragua
Place_Keyword: fUS40 = Oklahoma
Place_Keyword: fPK = Pakistan
Place_Keyword: fPM = Panama
Place_Keyword: fPP = Papua New Guinea
Place_Keyword: fUS42 = Pennsylvania
Place_Keyword: fPE = Peru
Place_Keyword: fRP = Philippines
Place_Keyword: fPL = Poland
Place_Keyword: fRO = Romania
Place_Keyword: fRS = Russia
Place_Keyword: fLO = Slovakia
Place_Keyword: fBP = Solomon Islands
Place_Keyword: fUS48 = Texas
Place_Keyword: fTH = Thailand
Place_Keyword: fTU = Turkey
Place_Keyword: fUK = United Kingdom
Place_Keyword: fUS49 = Utah
Place_Keyword: fUZ = Uzbekistan
Place_Keyword: fNH = Vanuatu
Place_Keyword: fVM = Vietnam
Place_Keyword: fUS51 = Virginia
Place_Keyword: fUS53 = Washington
Place_Keyword: fUS56 = Wyoming
Place_Keyword: fZA = Zambia
Theme:
Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data
Theme_Keyword: comma-delimited text
Theme_Keyword: file geodatabase (ESRI)
Theme_Keyword: KML
Theme_Keyword: shapefile
Theme:
Theme_Keyword_Thesaurus: Lithologic classification of geologic map units
Theme_Keyword: Porphyry
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: copper
Theme_Keyword: economic geology
Theme_Keyword: geospatial datasets
Theme_Keyword: metallic mineral resources
Theme_Keyword: mineral deposits
Theme_Keyword: natural resource assessment
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Connie Dicken
Contact_Organization: Midwest Region
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey
National Center Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6482
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: cdicken@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: https://mrdata.usgs.gov/sir20105090z/sir20105090z-large.png
Browse_Graphic_File_Description:
Reduced-size map showing permissive tracts for porphyry copper and sediment-hosted copper worldwide, (540 x 270 pixels)
Browse_Graphic_File_Type: PNG
Cross_Reference:
Citation_Information:
Title: (Complete metadata record)
Online_Linkage: https://mrdata.usgs.gov/metadata/sir-2010-5090-z.xml
Other_Citation_Details: XML format
Cross_Reference:
Citation_Information:
Originator: Dicken, Connie L.
Originator: Dunlap, Pamela
Originator: Parks, Heather L.
Originator: Hammarstrom, Jane M.
Originator: Zientek, Michael L.
Publication_Date: 2016
Title:
Spatial database for a global assessment of undiscovered copper resources: Chapter Z in <em>Global mineral resource assessment</em>
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090
Publication_Information:
Publisher: U.S. Geological Survey
Other_Citation_Details: DOI: 10.3133/sir20105090Z
Online_Linkage: https://pubs.usgs.gov/sir/2010/5090/z/
Data_Quality_Information:
Logical_Consistency_Report:
Tracts were checked to confirm deposits and prospects were inside tract boundaries.

Table pcu_precambrian_deps_pros contains descriptions of Precambrian deposits only one of which was used in the assessment (in Finland). These data are included for completeness and for reference.

Deposits and prospects that are geographically close to one another are considered by the assessment procedure to represent the same deposit, so their data are combined. This is how the porphyry copper deposits and prospects were separated into two tables, one containing individual deposit records (pcu_deps_pros) and the other containing aggregated reports describing groups of geographically close deposits that are combined for the assessment (pcu_groups).
Completeness_Report:
For the purpose of mineral resource assessment, deposits and prospects are included in the analysis if there is sufficient information available about them to determine that the deposit model is pertinent and that the information known about them can contribute usefully to the analysis. Consequently there may be in the literature or in other USGS databases reports of mineral resource occurrences that may appear to be pertinent to this study but were not included because those reports lack needed information.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Paul Denning, USGS
Publication_Date: 20140701
Title: Porphyry copper assessment of western Central Asia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-N
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/n/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20140701
Source_Currentness_Reference: Publication date
Source_Citation_Abbreviation: 2010-5090-N
Source_Contribution:
Berger, B.R., Mars, J.C., Denning, P.D., Phillips, J.D., Hammarstrom, J.M., Zientek, M.L, Dicken, C.L., and Drew, L.J., with contributions from Alexeiev, D., Seltmann, R., and Herrington, R.J., 2014, Porphyry copper assessment of western Central Asia: U.S. Geological Survey Scientific Investigations Report 2010-5090-N, 219 p., 8 plates, and spatial data, http://dx.doi.org/10.3133/sir20105090N.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Arthur Bookstrom, USGS
Publication_Date: 20140515
Title: Porphyry copper assessment of eastern Australia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-N
Online_Linkage: http://dx.doi.org/10.3133/sir20105090L
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20140515
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-L
Source_Contribution:
Bookstrom, A.A., Glen, R.A., Hammarstrom, J.M., Robinson, G.R., Jr., Zientek, M.L., Drenth, B.J., Jaireth, Subhash, Cossette, P.M., and Wallis, J.C., 2014, Porphyry copper assessment of eastern Australia: U.S. Geological Survey Scientific Investigations Report 2010-5090-L, 160 p., and GIS data, available at http://dx.doi.org/10.3133/sir20105090L.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Klaus Schulz, USGS
Publication_Date: 20081001
Title:
Quantitative mineral resource assessment of copper, molybdenum, gold, and silver in undiscovered porphyry copper deposits in the Andes Mountains of South America
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: USGS Open-file Report
Issue_Identification: 2008-1253
Online_Linkage: http://pubs.usgs.gov/of/2008/1253
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20081001
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Open-File Report 2008-1253
Source_Contribution:
Cunningham, C.G.; Zappettini, E.O.; Vivallo S., Waldo; Celada, C.M.; Quispe, Jorge; Singer, D.A.; Briskey, J.A.; Sutphin, D.M.; Gajardo M., Mariano; Diaz, Alejandro; Portigliati, Carlos; Berger, V.I., Carrasco, Rodrigo; and Schulz, K.J., 2008, Quantitative mineral resource assessment of copper, molybdenum, gold, and silver in undiscovered porphyry copper deposits in the Andes Mountains of South America: U.S. Geological Survey Open-File Report 2008-1253, 282 p., CD-ROM. (Also available at http://pubs.usgs.gov/of/2008/1253/.)

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Floyd Gray, USGS
Publication_Date: 20140228
Title:
Porphyry copper assessment of Central America and the Caribbean Basin
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-I
Online_Linkage: http://dx.doi.org/10.3133/sir20105090I
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20140228
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-I
Source_Contribution:
Gray, Floyd; Hammarstrom, J.M.; Ludington, Steve; Zürcher, Lukas; Nelson, C.E., Robinson, G.R., Jr., Miller, R.J., and Moring, B.C., 2014, Porphyry copper assessment of Central America and the Caribbean Basin: U.S. Geological Survey Scientific Investigations Report 2010-5090-I, 81 p. and GIS data, available at http://dx.doi.org/10.3133/sir20105090I.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Jane M. Hammarstrom, USGS, Geologist
Publication_Date: 20141104
Title:
Porphyry copper assessment of East and Southeast Asia: The Philippines, Taiwan (Republic of China), Republic of Korea (South Korea), and Japan
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Series
Issue_Identification: 2010-5090-P
Online_Linkage: http://dx.doi.org/10.3133/sir20105090P
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20141104
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-P
Source_Contribution:
Hammarstrom, J.M., Bookstrom, A.A., DeMarr, M.W., Dicken, C.L., Ludington, Steve, Robinson, G.R., Jr., and Zientek, M.L., with contributions from Cox, D.P., Gerel, Ochir, Manipon, C.J.C., Rollan, L.A., Sakimoto, Takehiro, Singer, D.A., Takagi, Tetsuichi, and Watanabe, Yasushi, 2014, Porphyry copper assessment of East and Southeast Asia: The Philippines, Taiwan (Republic of China), Republic of Korea (South Korea), and Japan: U.S. Geological Survey Scientific Investigations Report 2010-5090-P, 241 p. and GIS data, available at http://dx.doi.org/10.3133/sir20105090P.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Jane M. Hammarstrom, USGS, Geologist
Publication_Date: 20130314
Title: Porphyry copper assessment of Southeast Asia and Melanesia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Series
Issue_Identification: 2010-5090-D
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/d/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20130314
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-D
Source_Contribution:
Hammarstrom, J.M., Bookstrom, A.A., Dicken, C.L., Drenth, B.J., Ludington, Steve, Robinson, G.R., Jr., Setiabudi, B.T., Sukserm, Wudhikarn, Sunuhadi, D.N., Wah, A.Y.S., and Zientek, M.L., with contributions from Cox, D.P.; Jarnyaharn, Pairatt; Kopi, Gwaibo; Ngoc, N.T.M.; Otarawanna, Pichai; Pei, C.S.; Phany, Ung; Quy, N.V.; Sakimoto, Takehiro; Saroa, Dulcie; Soares de Costa, Norberta; Sotham, Sieng; Sim, I.M.; Trung, N.N.; Wongsomasak, Somob; Yokarti, Boonsong; and Zaw, Khin, 2013, Porphyry copper assessment of Southeast Asia and Melanesia: U.S. Geological Survey Scientific Investigations Report 2010-5090-D, 332 p. and GIS data, available at http://pubs.usgs.gov/sir/2010/5090/d/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Jane M. Hammarstrom, USGS, Geologist
Publication_Date: 20100929
Title: Porphyry copper assessment of Mexico
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Series
Issue_Identification: 2010-5090-A
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/a/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20100929
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-A
Source_Contribution:
Hammarstrom, J.M.; Robinson, G.R., Jr.; Ludington, Steve; Gray, Floyd; Drenth, B.J.; Cendejas-Cruz, Francisco; Espinosa, Enrique; Pérez-Segura, Efrén; Valencia-Moreno, Martín; Rodríguez-Castañeda, J.L.; Vásquez-Mendoza, Rigoberto; and Zürcher, Lukas, 2010, Porphyry copper assessment of Mexico: U.S. Geological Survey Scientific Investigations Report 2010-5090-A, 176 p. and GIS data, available at http://pubs.usgs.gov/sir/2010/5090/a/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Stephen Ludington, USGS, Geologist
Publication_Date: 20070101
Title:
Preliminary mineral resource assessment of selected mineral deposit types in Afghanistan
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: USGS Open-file Report
Issue_Identification: 2007-1005
Other_Citation_Details:
Afghanistan tracts have been modified from published report by Jane Hammarstrom and Steve Ludington for inclusion in this Global report. Permissive rocks were extracted from geologic maps, and buffers created around rocks to create modified assessment tracts.
Online_Linkage: http://pubs.usgs.gov/of/2007/1005/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20070101
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Open-File Report 2007-1005
Source_Contribution:
Ludington, Steve, Orris, G.J., Bolm, K.S., Peters, S.G., and U.S. Geological Survey-Afghanistan Ministry of Mines and Industry Joint Mineral Resource Assessment Team, 2007, Preliminary mineral resource assessment of selected mineral deposit types in Afghanistan: U.S. Geological Survey Open-File Report 2007-1005, 44 p., available at http://pubs.usgs.gov/of/2007/1005/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Stephen Ludington, USGS, Geologist
Publication_Date: 20121022
Title: Porphyry copper assessment of the Tibetan Plateau, China
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-F
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/f/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121022
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-F
Source_Contribution:
Ludington, Steve, Hammarstrom, J.M., Robinson, G.R., Jr., Mars, J.C., and Miller, R.J., 2012, Porphyry copper assessment of the Tibetan Plateau, China: U.S. Geological Survey Scientific Investigations Report 2010-5090-F, 63 p. and GIS data, available at http://pubs.usgs.gov/sir/2010/5090/f/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Stephen Ludington, USGS, Geologist
Publication_Date: 20121215
Title:
Porphyry copper assessment of the Mesozoic of East Asia: China, Vietnam, North Korea, Mongolia, and Russia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-G
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/g/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20121215
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-G
Source_Contribution:
Ludington, Steve, Mihalasky, M.J., Hammarstrom, J.M., Robinson, G.R., Jr., Frost, T.P., Gans, K.D., Light, T.D., Miller, R.J., and Alexeiev, Dmitriy, 2012, Porphyry copper assessment of the Mesozoic of East Asia: China, Vietnam, North Korea, Mongolia, and Russia: U.S. Geological Survey Scientific Investigations Report 2010-5090-G, 53 p. and GIS data, available at http://pubs.usgs.gov/sir/2010/5090/g/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Mark J Mihalasky, USGS
Publication_Date: 20111018
Title:
Porphyry copper assessment of British Columbia and Yukon Territory, Canada (version 1.1)
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-C
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/c/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20111018
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-C
Source_Contribution:
Mihalasky, M.J., Bookstrom, A.A., Frost, T.P., and Ludington, Steve, with contributions from Logan, J.M., Panteleyev, Andre, and Abbot, Grant, 2011, revised 2013, Porphyry copper assessment of British Columbia and Yukon Territory, Canada (version 1.1): U.S. Geological Survey Scientific Investigations Report 2010-5090-C, 128 p., data tables and GIS data, available at http://pubs.usgs.gov/sir/2010/5090/c/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Mark J Mihalasky, USGS
Publication_Date: 20150618
Title:
Porphyry copper assessment of northeast Asia: Far East Russia and northeasternmost China
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-W
Online_Linkage: http://dx.doi.org/10.3133/sir20105090W
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20150618
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-W
Source_Contribution:
Mihalasky, M.J., Ludington, Steve, Alexeiev, D.V., Frost, T.P., and Light, T.D., with contributions from Bookstrom, A.A., and Panteleyev, Andre, in press, Porphyry copper assessment of northeast Asia: Far East Russia and northeasternmost China: U.S. Geological Survey Scientific Investigations Report 2010-5090-W, 104 p. and GIS data, available at http://dx.doi.org/10.3133/sir20105090W.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Mark J Mihalasky, USGS
Publication_Date: 20150324
Title:
Porphyry Copper Assessment of the Central Asian Orogenic Belt and eastern Tethysides: China, Mongolia, Russia, Pakistan, Kazakhstan, Tajikistan, and India
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-X
Online_Linkage: http://dx.doi.org/10.3133/sir20105090X
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20150324
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-X
Source_Contribution:
Mihalasky, M.J., Ludington, Steve, Hammarstrom, J.M., Alexeiev, D.V., Frost, T.P., Light, T.D., Robinson, G.R., Jr., Briggs, D.A., Wallis, J.C., and Miller, R.J., with contributions from Bookstrom, A.A., Panteleyev, Andre, Chitalin, Andre, Seltmann, Reimar, Guangsheng, Y., Changyun, L., Jingwen, M., Jinyi, L., Keyan, X., Ruizhao, Q., Jianbao, S., Gangyi, S., and Yuliang, D., 2015, Porphyry Copper Assessment of the Central Asian Orogenic Belt and eastern Tethysides: China, Mongolia, Russia, Pakistan, Kazakhstan, Tajikistan, and India: U.S. Geological Survey Scientific Investigations Report 2010-5090-X, 106 p. and spatial data, http://dx.doi.org/10.3133/sir20105090X.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Kalevi Rasilaninen, Geological Survey of Finland
Publication_Date: 20140101
Title:
Quantitative assessment of undiscovered resources in volcanogenic massive sulphide deposits, porphyry copper deposits and Outokumpu-type deposits in Finland
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Report of Investigation
Issue_Identification: 208
Other_Citation_Details:
Digital GIS files provided to USGS by email from Kalevi Rasilaninen on January 9, 2015.
Online_Linkage: http://tupa.gtk.fi/julkaisu/tutkimusraportti/tr_208.pdf
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20140101
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Report of Investigation 208
Source_Contribution:
Rasilainen, K., Eilu, P., Halkoaho, T., Karvinen, A., Kontinen, A., Kousa, J., Lauri, L., Luukas, J., Niiranen, T., Nikander, J., Sipilä, P., Sorjonen-Ward, P., Tiainen, M., Törmänen, T. and Västi, K., 2014, Quantitative assessment of undiscovered resources in volcanogenic massive sulphide deposits, porphyry copper deposits and Outokumpu-type deposits in Finland: Geological Survey of Finland, Report of Investigation 208, 393 p., available at: http://tupa.gtk.fi/julkaisu/tutkimusraportti/tr_208.pdf.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Jane M. Hammarstrom, USGS, Geologist
Publication_Date: 20130702
Title:
Porphyry copper assessment of Europe, exclusive of the Fennoscandian Shield
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2090-5090-K
Online_Linkage: http://pubs.usgs.gov/sir/2010/5090/k/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20130702
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-K
Source_Contribution:
Sutphin, D.M., Hammarstrom, J.M., Drew, L.J., Large, D.E., Berger, B.B., Dicken, C.L., and DeMarr, M.W. with contributions from Billa, Mario; Briskey, J.A.; Cassard, Daniel; Lips, Andor; Pertold, Zdenek Pertold, and Emilian Rosu, 2013, Porphyry copper assessment of Europe, exclusive of the Fennoscandian Shield: U.S. Geological Survey Scientific Investigations Report 2010-5090-K, 199 p. and GIS data, available at http://pubs.usgs.gov/sir/2010/5090/k/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Stephen Ludington, USGS, Geologist
Publication_Date: 20020102
Title:
Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: USGS Open-file Report
Issue_Identification: 02-198
Other_Citation_Details:
United States tracts have been modified from this report by Jane Hammarstrom and Steve Ludington for inclusion in this Global report. Permissive rocks were extracted from geologic maps, and buffers created around rocks to create modified assessment tracts.
Online_Linkage: http://pubs.usgs.gov/of/2002/of02-198/
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20020101
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Open-File Report 02-198
Source_Contribution:
U.S. Geological Survey National Mineral Resource Assessment Team, 2002, Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 02-198, CD-ROM. Also available at http://pubs.usgs.gov/of/2002/of02-198/.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Source_Information:
Source_Citation:
Citation_Information:
Originator: Lukas Zürcher, USGS
Title:
Porphyry copper assessment of the Tethys region of western and southern Asia
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2010-5090-V
Online_Linkage: http://dx.doi.org/10.3133/sir20105090V
Type_of_Source_Media: onLine
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20151001
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: 2010-5090-V
Source_Contribution:
Zürcher, Lukas, Bookstrom, A.A., Hammarstrom, J.M., Mars, J.C., Ludington, Steve, Zientek, M.L., Dunlap, Pamela, and Wallis, J.C., with contributions from Drew, L.J., Sutphin, D.M.,Berger, B.R., Herringon, R.J., Billa, Mario, Kuscu, Ilkay, Moon, C.J., and Richards, J.P., 2015, Porphyry copper assessment of the Tethys region of western and southern Asia: U.S. Geological Survey Scientific Investigations Report 2010-5090-V, 232 p., and spatial data, available at http://dx.doi.org/10.3133/sir20105090V.

Polygon tracts were used from source regeional report to compile single copper tract feature class (pCu_tracts).
Process_Step:
Process_Description:
Delineation of permissive tracts was carried out on a regional basis by different groups of scientific investigators; their results were published separately over a few years. For this compilation, those results were assembled and combined, merging polygons where it was appropriate to do so, and ensuring that attribute data were consistent (correction of spelling errors where identified, for example).
Process_Date: 2014
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Connie Dicken
Contact_Organization: Midwest Region
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey
National Center Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6482
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: cdicken@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 3467
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-Polygon
Point_and_Vector_Object_Count: 240
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System 1984
Ellipsoid_Name: WGS 84
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: datadxny
Entity_Type_Definition: Data dictionary, explaining tables and fields
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: id
Attribute_Definition:
Record ID.

Row identifier within datadxny table Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 283
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: tblorder
Attribute_Definition:
Table order.

Order in which this table should appear in some presentations Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 10
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: tblname
Attribute_Definition:
Table name.

Name of the table Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: number
Attribute_Definition:
Ordinal position.

Order in which this field occurs in the RDBMS Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10 records have no value for number.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 73
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: label
Attribute_Definition:
Field label.

Label of the field in the RDBMS Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10 records have no value for label.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: category
Attribute_Definition:
Category.

General category of information provided by the contents of the field Textual values of no more than 50 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 9 records have no value for category.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: short_desc
Attribute_Definition:
Short description.

Descriptive name of the field used in some presentations, not constrained by rules affecting the label Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10 records have no value for short_desc.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: description
Attribute_Definition:
Description.

Longer description of the purpose and contents of the field Textual values of no more than 4096 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: link
Attribute_Definition:
Link.

URL providing more information about the field Textual values of no more than 96 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 283 records have no value for link.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: origin
Attribute_Definition:
Origin of field.

Abbreviation of an organization, data set, or other entity responsible for defining the field Textual values of no more than 12 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 283 records have no value for origin.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: sqltype
Attribute_Definition:
SQL type.

Data type of the field as used in the RDBMS Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10 records have no value for sqltype.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: dbftype
Attribute_Definition:
DBF field type.

Data type of the field when expressed in DBF Textual values of no more than 1 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 10 records have no value for dbftype.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: width
Attribute_Definition:
Field width.

Field width when expressed in DBF Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 132 records have no value for width.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 4096
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: prec
Attribute_Definition:
Precision.

Precision of the field (places to right of decimal) when expressed in DBF, only for numeric fields Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 213 records have no value for prec.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: units
Attribute_Definition:
Units of measure.

Units of measure of the field values Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 283 records have no value for units.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: nodata
Attribute_Definition:
No-data value.

Special value assigned to indicate that no information is available, usually used for numeric fields where a blank field might be intererpreted as the legitimate, but incorrect value zero. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 234 records have no value for nodata.
Enumerated_Domain_Value_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: pcu_deps_pros
Entity_Type_Definition: Porphyry copper deposits and prospects
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Internal feature number. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 2338
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: gmrap_id
Attribute_Definition:
GMRAP ID.

Unique identifier for each record. [GMRAP, Global Mineral Resource Assessment Project.] Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 9996
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: coded_id
Attribute_Definition:
Tract ID.

Coded, unique identifier assigned to permissive tract within which the site is located; corresponds to Coded_ID in the feature class pCu_tracts. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tract_name
Attribute_Definition:
Tract name.

Name of permissive tract in which the site is located; corresponds to Tract_name in the feature class pCu_tracts. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name
Attribute_Definition:
Site name.

Site name. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name_other
Attribute_Definition:
Alternate names.

Other names used for the site. Textual values of no more than 100 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1250 records have no value for name_other.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: name_group
Attribute_Definition:
Group name.

Group name, applied when 2-km rule was used to cluster deposits and (or) prospects for the purpose of calculating grades and tonnages. Textual values of no more than 28 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1914 records have no value for name_group.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: includes
Attribute_Definition:
Included sites.

Names of deposits and (or) prospects that were combined with the primary deposit as a result of the 2-km spatial aggregation rule used for calculating grades and tonnages, OR sites described in the original source reference(s) as being included in the description of primary site. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1749 records have no value for includes.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: sitestatus
Attribute_Definition:
Site status.

Type of site; deposit is a site for which grade and tonnage are reported; prospect is a site for which grade and tonnage are not reported. Textual values of no more than 12 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country in which site is located. Textual values of no more than 56 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: state_prov
Attribute_Definition:
State or province.

State, province or region in which the site is located. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: latitude
Attribute_Definition:
Latitude.

Latitude, in decimal degrees; positive number represents latitude north of the equator; negative number indicates latitude south of the equator. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -48.075
Range_Domain_Maximum: 68.700026
Attribute:
Attribute_Label: longitude
Attribute_Definition:
Longitude.

Longitude, in decimal degrees; positive number represents longitude east of the Greenwich meridian; negative number represents longitude west of the Greenwich meridian. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -161.1
Range_Domain_Maximum: 179.391531
Attribute:
Attribute_Label: dep_type
Attribute_Definition:
Deposit type.

Type of mineral deposit. Textual values of no more than 48 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_subtype
Attribute_Definition:
Deposit subtype.

Subtype of porphyry copper deposit type based on ratio of Au (g/t) to Mo (weight percent); entries include Cu-Au, Cu-Mo and NA (not applicable). Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age_ma
Attribute_Definition:
Age (Ma).

Age of mineralization; in millions of years before the present; based on reported absolute ages, or midpoints of ranges of absolute ages, or midpoints of geologic time scale units. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1299 records have no value for age_ma.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.5
Range_Domain_Maximum: 1990
Attribute:
Attribute_Label: age_method
Attribute_Definition:
Age determination method.

Method used to determine age reported in field Age_Ma. Textual values of no more than 68 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age_range
Attribute_Definition:
Age range.

Range of ages, listed from oldest to youngest; in absolute ages or in geologic time units. Textual values of no more than 144 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 212 records have no value for age_range.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: age_ref
Attribute_Definition:
Age reference.

Abbreviated citation, in author and year format, for reference(s) for age information; full references are listed in the FGDB standalone table pCu_sites_references. Textual values of no more than 104 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 232 records have no value for age_ref.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: comm_major
Attribute_Definition:
Major commodities.

Major commodities, listed in decreasing order of economic importance. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 115 records have no value for comm_major.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: comm_minor
Attribute_Definition:
Minor commodities.

Minor commodities, listed in decreasing order of economic importance; queried where uncertain. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1685 records have no value for comm_minor.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: comm_trace
Attribute_Definition:
Trace commodities.

Trace commodities, listed in decreasing order of economic importance. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 28 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2107 records have no value for comm_trace.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: tonnage_mt
Attribute_Definition:
Tonnage (Mt).

Ore tonnage, for deposit, in millions of metric tons (Mt). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1670 records have no value for tonnage_mt.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 21277
Attribute:
Attribute_Label: cu_pct
Attribute_Definition:
Cu grade (%).

Average copper grade, for deposit, in weight percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1672 records have no value for cu_pct.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.028
Range_Domain_Maximum: 1.57
Attribute:
Attribute_Label: mo_pct
Attribute_Definition:
Mo grade (%).

Average molybdenum grade, for deposit, in weight percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1929 records have no value for mo_pct.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0005
Range_Domain_Maximum: 0.1
Attribute:
Attribute_Label: au_g_t
Attribute_Definition:
Au grade (g/t).

Average gold grade, for deposit, in grams per metric ton (g/t). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1874 records have no value for au_g_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0011
Range_Domain_Maximum: 6.6
Attribute:
Attribute_Label: ag_g_t
Attribute_Definition:
Ag grade (g/t).

Average silver grade, for deposit, in grams per metric ton (g/t); Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 2004 records have no value for ag_g_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.081
Range_Domain_Maximum: 65
Attribute:
Attribute_Label: con_cu_t
Attribute_Definition:
Contained copper.

Contained copper, for deposit, in metric tons (t), rounded to nearest significant figure; Con_Cu_t = Tonnage_Mt*1,000,000*Cu_pct/100 where SiteStatus=deposit. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1672 records have no value for con_cu_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 16000
Range_Domain_Maximum: 130000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: au_mo
Attribute_Definition:
Gold-Moly ratio.

Ratio of Au (g/t) to Mo (weight percent), for deposit, rounded to nearest significant figure; Au_Mo = Au_g_t/Mo_pct where SiteStatus=deposit. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 2026 records have no value for au_mo.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1
Range_Domain_Maximum: 1000
Attribute:
Attribute_Label: comments
Attribute_Definition:
Comments.

Significant comments; may include grade and tonnage information for prospects, name of magmatic arc or belt. Textual values of no more than 1872 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 153 records have no value for comments.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: minerals
Attribute_Definition:
Minerals.

Minerals present, as reported in literature cited; listed in alphabetical order. Most rock-forming minerals such as feldspar and quartz are not reported. Textual values of no more than 556 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 982 records have no value for minerals.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: assd_rock
Attribute_Definition:
Associated rocks.

Associated rocks in the deposit and on regional source map. Textual values of no more than 388 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 821 records have no value for assd_rock.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: dev_status
Attribute_Definition:
Development status.

The status or nature of operations at the time the record was entered or this field was last modified. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: ref_list
Attribute_Definition:
References.

List of abbreviated citations, in author and year format, for references used in compiling information for site, delimited by semicolons; full references are listed in the FGDB standalone table pCu_sites_references. Textual values of no more than 800 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: setting
Attribute_Definition:
Tectonic setting.

Tectonic setting in which mineralization was emplaced. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: study_area
Attribute_Definition:
Study area name.

Geographic area of USGS report from which data were originally compiled. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: short_ref
Attribute_Definition:
Site reference.

Abbreviated citation for author and year of the USGS regional report from which data were originally compiled; full reference located in the lineage section of the metadata and listed in file geodatabase standalone table pCu_tracts_references. Textual values of no more than 76 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: strat_age
Attribute_Definition:
Stratigraphic age.

Stratigraphic age; Eon, Era or Period. Textual values of no more than 56 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 212 records have no value for strat_age.
Enumerated_Domain_Value_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: pcu_groups
Entity_Type_Definition:
Groups of closely-related porphyry copper deposits, for which characteristics such as grade and tonnage are aggregated
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Internal feature number. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 47
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: gmrap_id
Attribute_Definition:
GMRAP ID.

Unique identifier for each record. [GMRAP, Global Mineral Resource Assessment Project.] Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5000
Range_Domain_Maximum: 5060
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: coded_id
Attribute_Definition:
Tract ID.

Coded, unique identifier assigned to permissive tract. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tract_name
Attribute_Definition:
Tract name.

Informal name of permissive tract. Textual values of no more than 56 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name_group
Attribute_Definition:
Group name.

Group name, applied when 2-km rule was used to cluster deposits and (or) prospects for the purpose of calculating grades and tonnages. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: includes
Attribute_Definition:
Included sites.

Names of deposits and prospects that have been grouped as a result of the 2-km aggregation rule used for calculating grades and tonnages. Textual values of no more than 252 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: sitestatus
Attribute_Definition:
Site status.

Type of site; deposit is a site for which grade and tonnage are reported; prospect is a site for which grade and tonnage are not reported. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country in which site is located. Textual values of no more than 48 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: state_prov
Attribute_Definition:
State or province.

State, province or region. Textual values of no more than 36 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: latitude
Attribute_Definition:
Latitude.

Latitude, in decimal degrees, for a general location of the group; positive number represents latitude north of the equator; negative number indicates latitude south of the equator. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -34.327824
Range_Domain_Maximum: 58.213604609
Attribute:
Attribute_Label: longitude
Attribute_Definition:
Longitude.

Longitude, in decimal degrees, for a general location of the group; positive number represents longitude east of the Greenwich meridian; negative number represents longitude west of the Greenwich meridian. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -131.794220144
Range_Domain_Maximum: 178.187
Attribute:
Attribute_Label: dep_type
Attribute_Definition:
Deposit type.

Type of mineral deposit. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_subtype
Attribute_Definition:
Deposit subtype.

Subtype of porphyry copper deposit type. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age_ma
Attribute_Definition:
Age (Ma).

Age of mineralization; reported as absolute age, or midpoint of range of absolute ages, or midpoint of geologic time scale unit(s). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 11 records have no value for age_ma.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.7
Range_Domain_Maximum: 456
Attribute:
Attribute_Label: age_method
Attribute_Definition:
Age determination method.

Method used to determine age reported in field Age_Ma. Textual values of no more than 60 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age_range
Attribute_Definition:
Age range.

Range of ages, listed from oldest to youngest. Textual values of no more than 76 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2 records have no value for age_range.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: age_ref
Attribute_Definition:
Age reference.

Abbreviated citation, in author and year format, for reference(s) for age information; full references are listed in the FGDB standalone table pCu_sites_references. Textual values of no more than 84 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2 records have no value for age_ref.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: comm_major
Attribute_Definition:
Major commodities.

Major commodities, listed in decreasing order of economic importance. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: comm_minor
Attribute_Definition:
Minor commodities.

Minor commodities, listed in decreasing order of economic importance; queried where uncertain. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 23 records have no value for comm_minor.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: comm_trace
Attribute_Definition:
Trace commodities.

Trace commodities, listed in decreasing order of economic importance. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 37 records have no value for comm_trace.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: tonnage_mt
Attribute_Definition:
Tonnage (Mt).

Total ore tonnage for all deposits in the group, in millions of metric tons (Mt). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 12 records have no value for tonnage_mt.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 23
Range_Domain_Maximum: 4692
Attribute:
Attribute_Label: cu_pct
Attribute_Definition:
Cu grade (%).

Weighted average copper grade, for all deposits in the group, in weight percent, where weighted average resulting from the multiplication of each component by a factor reflecting its importance. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 12 records have no value for cu_pct.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.15
Range_Domain_Maximum: 0.9
Attribute:
Attribute_Label: mo_pct
Attribute_Definition:
Mo grade (%).

Weighted average molybdenum grade, for all deposits in the group, in weight percent, where weighted average resulting from the multiplication of each component by a factor reflecting its importance. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 26 records have no value for mo_pct.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.001
Range_Domain_Maximum: 0.022
Attribute:
Attribute_Label: au_g_t
Attribute_Definition:
Au grade (g/t).

Weighted average gold grade, for all deposits in the group, in grams per metric ton (g/t), where weighted average resulting from the multiplication of each component by a factor reflecting its importance. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 17 records have no value for au_g_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.005
Range_Domain_Maximum: 0.59
Attribute:
Attribute_Label: ag_g_t
Attribute_Definition:
Ag grade (g/t).

Weighted average silver grade, for all deposits in the group, in grams per metric ton (g/t), where weighted average resulting from the multiplication of each component by a factor reflecting its importance. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 31 records have no value for ag_g_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.08
Range_Domain_Maximum: 9.52
Attribute:
Attribute_Label: con_cu_t
Attribute_Definition:
Contained copper.

Total contained copper, for all deposits in the group, in metric tons (t), rounded to nearest significant figure; Con_Cu_t = Tonnage_Mt*1,000,000*Cu_pct/100 where SiteStatus=deposit. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 12 records have no value for con_cu_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 104000
Range_Domain_Maximum: 23000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: au_mo
Attribute_Definition:
Gold-Moly ratio.

Ratio of Au (g/t) to Mo (weight percent), rounded to nearest significant figure; Au_Mo = Au_g_t/Mo_pct where SiteStatus=deposit. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for au_mo.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 200
Attribute:
Attribute_Label: comments
Attribute_Definition:
Comments.

All significant comments; may include grade and tonnage information for prospects, name of magmatic arc or belt. Textual values of no more than 460 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: minerals
Attribute_Definition:
Minerals.

Minerals present, as reported in literature cited; listed in alphabetical order. Most rock-forming minerals such as feldspar and quartz are not reported. Textual values of no more than 500 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 3 records have no value for minerals.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: assd_rock
Attribute_Definition:
Associated rocks.

Associated rocks in the deposit and on regional source map. Textual values of no more than 188 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 3 records have no value for assd_rock.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: dev_status
Attribute_Definition:
Development status.

The status or nature of operations at the time the record was entered or this field was last modified. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: ref_list
Attribute_Definition:
References.

All reference(s) for data in this record, in author(s) and year format, delimited by semicolons. See file geodatabase table "pCu_sites_references" for complete source references (listed by deposit or prospect). Textual values of no more than 800 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: setting
Attribute_Definition:
Tectonic setting.

Tectonic setting in which mineralization was emplaced. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: study_area
Attribute_Definition:
Study area name.

Geographic area of USGS report from which data were originally compiled. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: short_ref
Attribute_Definition:
Site reference.

Abbreviated citation for author and year of the USGS regional report from which data were originally compiled; full reference located in the lineage section of the metadata and listed in file geodatabase standalone table pCu_tracts_references. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: strat_age
Attribute_Definition:
Stratigraphic age.

Stratigraphic age; Eon, Era or Period Textual values of no more than 36 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2 records have no value for strat_age.
Enumerated_Domain_Value_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: pcu_precambrian_deps_pros
Entity_Type_Definition:
Precambrian porphyry copper deposits and prospects. Not used directly in the assessment, provided for reference.
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Internal feature number. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 22
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: name
Attribute_Definition:
Site name.

Site name. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name_other
Attribute_Definition:
Alternate names.

Other names used for the site. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 16 records have no value for name_other.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: includes
Attribute_Definition:
Included sites.

Names of deposits and (or) prospects that were combined with the primary deposit as a result of the 2-km spatial aggregation rule used for calculating grades and tonnages, OR sites described in the original source reference(s) as being included in the description of primary site. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 19 records have no value for includes.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: sitestatus
Attribute_Definition:
Site status.

Type of site; deposit is a site for which grade and tonnage are reported; prospect is a site for which grade and tonnage are not reported. Textual values of no more than 12 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country in which the site is located. Textual values of no more than 12 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: stateprov
Attribute_Definition:
State or province.

State, province or region in which the site is located. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: latitude
Attribute_Definition:
Latitude.

Latitude, in decimal degrees; positive number represents latitude north of the equator; negative number indicates latitude south of the equator. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -28.683333
Range_Domain_Maximum: 67.0725
Attribute:
Attribute_Label: longitude
Attribute_Definition:
Longitude.

Longitude, in decimal degrees; positive number represents longitude east of the Greenwich meridian; negative number represents longitude west of the Greenwich meridian. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -91
Range_Domain_Maximum: 120.108333
Attribute:
Attribute_Label: dep_type
Attribute_Definition:
Deposit type.

Type of mineral deposit. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_subtype
Attribute_Definition:
Deposit subtype.

Subtype of porphyry copper deposit type. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age_ma
Attribute_Definition:
Age (Ma).

Age of mineralization; in millions of years before the present; based on reported absolute ages, or midpoints of ranges of absolute ages, or midpoints of geologic time scale units. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 621
Range_Domain_Maximum: 3234
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: tonnage
Attribute_Definition:
Tonnage (Mt).

Ore tonnage, for deposit, in millions of metric tons (Mt). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1340
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_pct
Attribute_Definition:
Cu grade (%).

Average copper grade, for deposit, in weight percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.83
Attribute:
Attribute_Label: mo_pct
Attribute_Definition:
Mo grade (%).

Average molybdenum grade, for deposit, in weight percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.09
Attribute:
Attribute_Label: au_g_t
Attribute_Definition:
Au grade (g/t).

Average gold grade, for deposit, in grams per metric ton (g/t). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.35
Attribute:
Attribute_Label: ag_g_t
Attribute_Definition:
Ag grade (g/t).

Average silver grade, for deposit, in grams per metric ton (g/t). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 6
Detailed_Description:
Entity_Type:
Entity_Type_Label: pcu_sites_references
Entity_Type_Definition:
Bibliographic references used for porphyry copper deposits and prospects
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Record identifier for the table row Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 7931
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: relate_id
Attribute_Definition:
Relate ID.

Relationship identifier used in ArcGIS software Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 7931
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: gmrap_id
Attribute_Definition:
GMRAP ID.

Identifier for the mine, prospect, or occurrence as known to the project that created these data Integer values. Integer of width 6.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 9996
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: coded_id
Attribute_Definition:
Tract ID.

Identifier for the permissive tract containing the site. The deposit model of the site must match the target deposit model of the permissive tract. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name
Attribute_Definition:
Site name.

Name of the site to which this reference pertains Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: auth_year
Attribute_Definition:
Short reference.

Author and year of publication of the reference, used as in-text citation or to sort these records in a list. Textual values of no more than 84 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: citation
Attribute_Definition:
Full reference.

Bibliographic reference in the form it would appear in a published journal article, using USGS style conventions. Textual values of no more than 788 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: web_link
Attribute_Definition:
Online linkage.

A URL or other web link for the publication Textual values of no more than 220 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2621 records have no value for web_link.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: region
Attribute_Definition:
Region.

Name of the geographic region to which the reference pertains, and in which the site lies. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: pcu_tracts
Entity_Type_Definition: Permissive tracts for porphyry copper deposits
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Internal feature number. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 208
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: coded_id
Attribute_Definition:
Tract ID.

Coded, unique identifier assigned to permissive tract. [3 digit region code] pCu [4 digit tract number] Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tract_name
Attribute_Definition:
Tract name.

Informal name of permissive tract. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: unregcode
Attribute_Definition:
UN region code.

Three digit United Nations code for the region that underlies most of the permissive tract. (ISO 3166-1 numeric) Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3
Range_Domain_Maximum: 150
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country(ies) in which permissive tract is located Textual values of no more than 108 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: commodity
Attribute_Definition:
Commodity.

Primary commodity being assessed Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: study_area
Attribute_Definition:
Study area name.

Geographic area of USGS report from which data were originally compiled. Textual values of no more than 60 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: quant
Attribute_Definition:
Quantitative assessment.

Dichotomous variable for whether or not a quantitative resource assessment was performed for tract. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: region
Attribute_Definition:
Region.

Name of large geographic region used for reporting copper resources in Johnson and others (2014). Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_type
Attribute_Definition:
Deposit type.

Type of mineral deposit. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: gt_model
Attribute_Definition:
Grade-tonnage model.

Grade-tonnage model used for the undiscovered deposit simulation. Textual values of no more than 72 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: geology
Attribute_Definition:
Geologic feature.

Geologic feature assessed. Textual values of no more than 260 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age
Attribute_Definition:
Geologic feature age.

Age of the assessed geologic feature. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age_group
Attribute_Definition:
Generalized age.

Generalized geologic age. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: asmt_date
Attribute_Definition:
Assessment date.

Year assessment was conducted. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2005
Range_Domain_Maximum: 2015
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: asmt_depth
Attribute_Definition:
Assessment depth.

Maximum depth beneath the Earth's surface used for the assessment, in kilometers. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 1
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n90
Attribute_Definition:
Est deposits 90%.

Estimated number of deposits associated with the 90th percentile (90 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for n90.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 10
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n50
Attribute_Definition:
Est deposits 50%.

Estimated number of deposits associated with the 50th percentile (50 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for n50.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 20
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n10
Attribute_Definition:
Est deposits 10%.

Estimated number of deposits associated with the 10th percentile (10 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for n10.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n05
Attribute_Definition:
Est deposits 5%.

Estimated number of deposits associated with the 5th percentile (5 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for n05.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n01
Attribute_Definition:
Est deposits 1%.

Estimated number of deposits associated with the 1st percentile (1 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for n01.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n_expected
Attribute_Definition:
Mean estimated deposits.

Expected (mean) number of deposits, where N_expected = (0.233*N90) + (0.4*N50) + (0.225*N10) + (0.045*N05) + (0.03*N01). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for n_expected.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 40.33
Attribute:
Attribute_Label: s
Attribute_Definition:
Standard deviation.

Standard deviation, where s = 0.121 - (0.237*N90) - (0.093*N50) + (0.183*N10) + (0.073*N05) + (0.123*N01) Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for s.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 33.79
Attribute:
Attribute_Label: cv_percent
Attribute_Definition:
Coefficient of variance.

Coefficient of variance, in percent, where Cv = (s/N_expected) * 100. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for cv_percent.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 2.11
Attribute:
Attribute_Label: est_levels
Attribute_Definition:
Confidence levels.

The set of percentile (probability) levels at which undiscovered deposit estimates were made. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: n_known
Attribute_Definition:
Known deposits.

Number of known deposits in the tract. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 46
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n_total
Attribute_Definition:
Total deposits.

Total number of deposits, where N_total = N_expected + N_known. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 62.06
Attribute:
Attribute_Label: area_km2
Attribute_Definition:
Area (sq km).

Area of permissive tract calculated in a locally appropriate equal-area projection, in square kilometers. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1170920
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: depdensity
Attribute_Definition:
Deposit density (sq km).

Deposit density (total number of deposits per square kilometer), where DepDensity = N_total/Area_km2. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for depdensity.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.00246
Attribute:
Attribute_Label: depden10e5
Attribute_Definition:
Deposit density (10e5 sq km).

Deposit density per 100,000 square kilometers, where DepDen10E5 = DepDensity*100,000. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for depden10e5.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 246
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: estimators
Attribute_Definition:
Estimators.

Names of people on the estimation team. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: mean_cu_t
Attribute_Definition:
Mean Cu tonnage.

Mean copper resources, in metric tons, based on Monte Carlo simulation. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 210000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: mean_mo_t
Attribute_Definition:
Mean Mo tonnage.

Mean molybdenum resources, in metric tons, based on Monte Carlo simulation. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 6300000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: mean_au_t
Attribute_Definition:
Mean Au tonnage.

Mean gold resources, in metric tons, based on Monte Carlo simulation. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 3800
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: mean_ag_t
Attribute_Definition:
Mean Ag tonnage.

Mean silver resources, in metric tons, based on Monte Carlo simulation. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 70000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: mean_rock_mt
Attribute_Definition:
Mean ore tonnage.

Mean ore tonnage, in metric tons, based on Monte Carlo simulation. Bigint of width .
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: cu_95
Attribute_Definition:
Undiscovered Cu, 95%.

Undiscovered copper resource estimate, 95th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 22000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_90
Attribute_Definition:
Undiscovered Cu, 90%.

Undiscovered copper resource estimate, 90th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 46000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_50
Attribute_Definition:
Undiscovered Cu, 50%.

Undiscovered copper resource estimate, median (50th percentile) value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 190000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_10
Attribute_Definition:
Undiscovered Cu, 10%.

Undiscovered copper resource estimate, 10th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 400000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_05
Attribute_Definition:
Undiscovered Cu, 5%.

Undiscovered copper resource estimate, 5th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 470000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: prob_mean
Attribute_Definition:
Probability of mean.

Probability of the mean value, undiscovered copper resource estimate. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.46
Attribute:
Attribute_Label: prob_0_cu
Attribute_Definition:
Probability of no Cu.

Probability of no copper, based on Monte Carlo simulation. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.71
Attribute:
Attribute_Label: ident_cu
Attribute_Definition:
Identified Cu resources.

Known copper resources, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 340000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n_prospects
Attribute_Definition:
Known prospects.

Number of identified porphyry copper prospects in tract. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 65
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: scales
Attribute_Definition:
Map scales used.

List of map scales used, by denominator, to delineate tract boundary. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: begin_age
Attribute_Definition:
Oldest rocks age.

Oldest age of permissive rocks in the tract, from geologic source maps, in millions of years before the present. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5.3
Range_Domain_Maximum: 2100
Attribute:
Attribute_Label: end_age
Attribute_Definition:
Youngest rocks age.

Youngest age of permissive rocks in the tract, from geologic source maps, in millions of years before the present. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 2100
Attribute:
Attribute_Label: duration
Attribute_Definition:
Age range.

Age range of permissive rocks in the tract, from geologic source maps. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 442
Attribute:
Attribute_Label: short_ref
Attribute_Definition:
Reference.

Abbreviated citation for source reference; full reference located in the lineage section of the metadata and listed in file geodatabase standalone table pCu_tracts_references. Textual values of no more than 108 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: meancu_km2
Attribute_Definition:
Mean Cu (t/sq km).

Mean copper resources per square kilometer, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 8174
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ctryfraser
Attribute_Definition:
Fraser country.

Country used for infrastructure rankings as compiled by the Fraser Institute (McMahon and Cervantes, 2012). Textual values of no more than 96 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 5 records have no value for ctryfraser.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: fras_typ
Attribute_Definition:
Fraser type.

Percentage of categories 1 and 2, from quality of infrastructure table (McMahon and Cervantes, 2012), used to classify cost setting. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.97
Attribute:
Attribute_Label: fras_high
Attribute_Definition:
Fraser high.

Percentage of categories 3, 4, and 5, from quality of infrastructure table (McMahon and Cervantes, 2012), used to classify cost setting. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1
Attribute:
Attribute_Label: typ_cost
Attribute_Definition:
Typical cost.

Ranking for typical cost, in percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1
Attribute:
Attribute_Label: high_cost
Attribute_Definition:
High cost.

Ranking for high cost, in percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1
Attribute:
Attribute_Label: infra_set
Attribute_Definition:
Infrastructure setting.

Mine cost setting based on infrastructure development. Textual values of no more than 12 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 9 records have no value for infra_set.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: depth_dist
Attribute_Definition:
Comments on depth.

Comments on rationale for assignment of depth distributions categories. Textual values of no more than 88 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for depth_dist.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: d_0_250m
Attribute_Definition:
Depth 0 - 250m.

Proportion of undiscovered deposits occurring in the interval between the surface and 250 meters in depth. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.35
Attribute:
Attribute_Label: d_250_500m
Attribute_Definition:
Depth 250m - 500m.

Proportion of undiscovered deposits occurring in the interval from 250-500 meters in depth. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.3
Attribute:
Attribute_Label: d_over500m
Attribute_Definition:
Depth over 500m.

Proportion of undiscovered deposits occurring in the interval from 500-1,000 meters in depth. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.6
Attribute:
Attribute_Label: ec_cu
Attribute_Definition:
Econ recoverable Cu.

Estimated amount of economically recoverable copper, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 170000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ec_mo
Attribute_Definition:
Econ recoverable Mo.

Estimated amount of economically recoverable molybdenum, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 3600000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ec_au
Attribute_Definition:
Econ recoverable Au.

Estimated amount of economically recoverable gold, in metric tons (t). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1300
Attribute:
Attribute_Label: ec_ag
Attribute_Definition:
Econ recoverable Ag.

Estimated amount of economically recoverable silver, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 50000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ec_0_prob
Attribute_Definition:
Probability no econ recoverable.

Probability of no economic resources occurring in the tract, in percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1
Attribute:
Attribute_Label: ec_nvp
Attribute_Definition:
Econ NPV.

Net present value of simulated economic deposits in the tract, in million U.S. dollars. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 51000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ev_id
Attribute_Definition:
Exp dollars.

Expected value of simulated resources in the tract, in million U.S. dollars/100,000 km2. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -87.97
Range_Domain_Maximum: 1924.11
Attribute:
Attribute_Label: ev_class
Attribute_Definition:
Exp value class.

Qualitative classification of expected value of simulated resources in the tract. Textual values of no more than 12 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tect_set
Attribute_Definition:
Tectonic setting.

Tectonic setting. Textual values of no more than 24 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: econ_ref
Attribute_Definition:
Economic reference.

Abbreviated citation for economic source reference; full reference is listed in file geodatabase standalone table pCu_tracts_references. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 25 records have no value for econ_ref.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: shape_length
Attribute_Definition:
Perimeter.

Length of feature in internal units. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.98183523949
Range_Domain_Maximum: 823.058353604
Attribute:
Attribute_Label: shape_area
Attribute_Definition:
Area.

Area of feature in internal units squared. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0513568023928
Range_Domain_Maximum: 196.13472178
Detailed_Description:
Entity_Type:
Entity_Type_Label: pcu_tracts_references
Entity_Type_Definition:
Bibliographic references used for porphyry copper permissive tracts
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Record identifier in the database table Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 20
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: short_ref
Attribute_Definition:
Short reference.

Author and year, used as in-text citation or to sort these references in a list. Textual values of no more than 108 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: web_link
Attribute_Definition:
Online linkage.

URL or other web address for the report cited by the reference. Textual values of no more than 60 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1 records have no value for web_link.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: web_link2
Attribute_Definition:
Online linkage 2.

Alternative URL or other network address used to locate the report. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 19 records have no value for web_link2.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: full_ref
Attribute_Definition:
Reference.

Bibliographic reference in the form it would appear in a published journal article, using USGS style conventions. Textual values of no more than 796 characters.
Attribute_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: sedcu_deps_pros
Entity_Type_Definition: Sediment-hosted copper deposits and prospects
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Internal feature number. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 1202
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: gmrap_id
Attribute_Definition:
GMRAP ID.

Unique identifier for each record. [GMRAP, Global Mineral Resource Assessment Project.] Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 11222
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: coded_id
Attribute_Definition:
Tract ID.

Coded, unique identifier assigned to permissive tract within which the site is located; corresponds to Coded_ID in the feature class sedCu_tracts. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tract_name
Attribute_Definition:
Tract name.

Name of permissive tract in which the site is located; corresponds to Tract_name in the feature class sedCu_tracts. Textual values of no more than 56 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name
Attribute_Definition:
Site name.

Site name. Textual values of no more than 52 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: name_other
Attribute_Definition:
Alternate names.

Other names used for the site. Textual values of no more than 128 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1049 records have no value for name_other.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: name_group
Attribute_Definition:
Group name.

Group name, applied when 500-m rule was used to cluster deposits and (or) prospects. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1173 records have no value for name_group.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: includes
Attribute_Definition:
Included sites.

Names of deposits that have been combined with the primary deposit as a result of the 500-m aggregation rule used for calculating grades and tonnages. Textual values of no more than 252 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1176 records have no value for includes.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: sitestatus
Attribute_Definition:
Site status.

Type of site. Deposit--a site that has grade and tonnage. Historic mine - 19th century or earlier--a site that is a no longer active historic mine. Prospect--a site with no grade and tonnage values provided. Prospect--a mineralized material estimated: a site that has estimated mineralized material. Site--a site that occurs in sedimentary rock but has no other descriptive information. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: sitestatus2
Attribute_Definition:
Site status additional.

Additional information on the status of the site. Textual values of no more than 104 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 1024 records have no value for sitestatus2.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country in which the site is located. Textual values of no more than 36 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: state_prov
Attribute_Definition:
State or province.

State, province or region in which the site is located. Textual values of no more than 28 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: latitude
Attribute_Definition:
Latitude.

Latitude, in decimal degrees; positive number represents latitude north of the equator; negative number indicates latitude south of the equator. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -39.52452
Range_Domain_Maximum: 73.745822
Attribute:
Attribute_Label: longitude
Attribute_Definition:
Longitude.

Longitude, in decimal degrees; positive number represents longitude east of the Greenwich meridian; negative number represents longitude west of the Greenwich meridian. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -129.57404
Range_Domain_Maximum: 119.761494
Attribute:
Attribute_Label: dep_type
Attribute_Definition:
Deposit type.

Type of mineral deposit. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_subtype
Attribute_Definition:
Deposit subtype.

Subtype of sediment-hosted copper. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 201 records have no value for dep_subtype.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: age_host
Attribute_Definition:
Host rock age chronostratigraphic.

Age of host rock, in standard divisions of geologic time. Textual values of no more than 28 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 2 records have no value for age_host.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: age_ma
Attribute_Definition:
Host rock age quantitative.

Age, in millions of years before present. Age may be an average or midpoint for geologic era, period, or epoch listed. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1800
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: unit
Attribute_Definition:
Geologic unit.

Geologic unit in which site is located. Textual values of no more than 100 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 77 records have no value for unit.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: host_rocks
Attribute_Definition:
Host rock lithology.

Simplified lithologic description of host rocks. Textual values of no more than 164 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 703 records have no value for host_rocks.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: comm_major
Attribute_Definition:
Major commodity.

Major commodities, listed in decreasing order of economic importance. Chemical symbols are used for commodities; multiple commodities are comma-delimited. Textual values of no more than 28 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tonnage_mt
Attribute_Definition:
Tonnage (Mt).

Ore tonnage, for deposit, in millions of metric tons (Mt). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1016 records have no value for tonnage_mt.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.011
Range_Domain_Maximum: 3612.499
Attribute:
Attribute_Label: cu_pct
Attribute_Definition:
Cu grade (%).

Average copper grade, for deposit, in weight percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1013 records have no value for cu_pct.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.3
Range_Domain_Maximum: 6.59
Attribute:
Attribute_Label: co_pct
Attribute_Definition:
Co grade (%).

Average cobalt grade, in weight percent. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1144 records have no value for co_pct.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01
Range_Domain_Maximum: 2.308
Attribute:
Attribute_Label: ag_g_t
Attribute_Definition:
Ag grade (g/t).

Average silver grade, for deposit, in grams per metric ton (g/t). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1185 records have no value for ag_g_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 137.6
Attribute:
Attribute_Label: con_cu_t
Attribute_Definition:
Contained Cu (t).

Contained copper, for deposit, in metric tons (t), rounded to nearest significant figure. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 1012 records have no value for con_cu_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 210
Range_Domain_Maximum: 72000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: comments
Attribute_Definition:
Comments.

Significant comments. Textual values of no more than 260 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 682 records have no value for comments.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: minerals
Attribute_Definition:
Minerals.

Ore and gangue minerals, listed in approximate order of abundance. Textual values of no more than 188 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 966 records have no value for minerals.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: ref_list
Attribute_Definition:
References.

List of abbreviated citations, in author and year format, for references used in compiling information for site, delimited by semicolons; full references are listed in the file geodatabase nonspatial table, sedCu_references. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: short_ref
Attribute_Definition:
Site reference.

Abbreviated citation for author and year of the USGS regional report from which data were originally compiled; full reference located in the lineage section of the metadata and listed in file geodatabase nonspatial table sedCu_references. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: sedcu_references
Entity_Type_Definition:
Bibliographic references used for sediment-hosted copper deposits
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Record identifier of the bibliography entry. Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 214
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: ref_short
Attribute_Definition:
Short reference.

Author and year, used as in-text citation or to sort these references in a list. Textual values of no more than 84 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: full_ref
Attribute_Definition:
Reference.

Bibliographic reference in the form it would appear in a published journal article, using USGS style conventions. Textual values of no more than 768 characters.
Attribute_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: sedcu_tracts
Entity_Type_Definition: Permissive tracts for sediment-hosted copper deposits
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: objectid
Attribute_Definition:
Feature ID.

Internal feature number. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 48
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: coded_id
Attribute_Definition:
Tract ID.

Coded, unique identifier assigned to permissive tract. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: tract_name
Attribute_Definition:
Tract name.

Informal name of permissive tract. Textual values of no more than 56 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: unregcode
Attribute_Definition:
UN region code.

Three digit UN code for the region that underlies most of the permissive tract. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 150
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country(ies) in which the permissive tract is located. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: commodity
Attribute_Definition:
Commodity.

Primary commodity being assessed. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: region
Attribute_Definition:
Region.

Name of geographic region used for reporting copper resources in Johnson and others (2014). Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: basin
Attribute_Definition:
Basin name.

Name of sedimentary basin in which the permissive tract is located. Textual values of no more than 52 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_type
Attribute_Definition:
Deposit type.

Type of mineral deposit. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dep_model
Attribute_Definition:
Deposit model.

Model used to classify deposit type. Textual values of no more than 72 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: dmodel_ref
Attribute_Definition:
Deposit model reference.

Deposit type model short reference; full reference is provided in nonspatial table sedCu_references. Textual values of no more than 44 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: gt_model
Attribute_Definition:
Grade-tonnage model.

Grade-tonnage model used for the undiscovered deposit estimate. Textual values of no more than 72 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: gatm_ref
Attribute_Definition:
GT model reference.

Abbreviated citation for grade and tonnage model; full reference is provided in the standalone table sedCu_references. Textual values of no more than 36 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: geology
Attribute_Definition:
Geologic feature.

Geologic feature assessed. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: age
Attribute_Definition:
Geologic feature age.

Age of the assessed geologic feature. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: asmt_date
Attribute_Definition:
Assessment date.

Year assessment was conducted. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1998
Range_Domain_Maximum: 2012
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: asmt_depth
Attribute_Definition:
Assessment depth.

Maximum depth beneath the Earth's surface used for the assessment, in kilometers. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 2.5
Attribute:
Attribute_Label: est_levels
Attribute_Definition:
Confidence levels.

The set of percentile (probability) levels at which undiscovered deposit estimates were made. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: n90
Attribute_Definition:
Est deposits 90%.

Estimated number of deposits associated with the 90th percentile (90 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for n90.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 50
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n50
Attribute_Definition:
Est deposits 50%.

Estimated number of deposits associated with the 50th percentile (50 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for n50.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 85
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n10
Attribute_Definition:
Est deposits 10%.

Estimated number of deposits associated with the 10th percentile (10 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for n10.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 180
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n05
Attribute_Definition:
Est deposits 5%.

Estimated number of deposits associated with the 5th percentile (5 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for n05.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 180
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n01
Attribute_Definition:
Est deposits 1%.

Estimated number of deposits associated with the 1st percentile (1 percent chance of at least the indicated number of deposits). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for n01.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 180
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n_expected
Attribute_Definition:
Mean estimated deposits.

Expected (mean) number of deposits, where N_expected = (0.233*N90) + (0.4*N50) + (0.225*N10) + (0.045*N05) + (0.03*N01). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for n_expected.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.03
Range_Domain_Maximum: 100
Attribute:
Attribute_Label: s
Attribute_Definition:
Standard deviation.

Standard deviation, where s = 0.121 - (0.237*N90) - (0.093*N50) + (0.183*N10) + (0.073*N05) + (0.123*N01). Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for s.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.24
Range_Domain_Maximum: 49
Attribute:
Attribute_Label: cv_percent
Attribute_Definition:
Coefficient of variance.

Coefficient of variance, in percent, where Cv = (s/N_expected) * 100. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for cv_percent.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 26
Range_Domain_Maximum: 810
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n_known
Attribute_Definition:
Known deposits.

Number of known deposits in the tract. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 52
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: n_total
Attribute_Definition:
Total deposits.

Total number of deposits, where N_total = N_expected + N_known. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 152
Attribute:
Attribute_Label: area_km2
Attribute_Definition:
Area (sq km).

Area of permissive tract, in square kilometers. Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 129
Range_Domain_Maximum: 186791
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: depdensity
Attribute_Definition:
Deposit density (sq km).

Deposit density (total number of deposits per square kilometer). DepDensity = N_total/Area_km2. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 4 records have no value for depdensity.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6e-06
Range_Domain_Maximum: 0.043
Attribute:
Attribute_Label: depden10e5
Attribute_Definition:
Deposit density (10e5 sq km).

Deposit density per 100,000 square kilometers. DepDen10E5 = DepDensity*100,000. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 4 records have no value for depden10e5.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.6
Range_Domain_Maximum: 4300
Attribute:
Attribute_Label: estimators
Attribute_Definition:
Estimators.

Names of people on the estimation team. Textual values of no more than 208 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: ident_cu
Attribute_Definition:
Identified Cu resources.

Known copper resources, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 72000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_95
Attribute_Definition:
Undiscovered Cu, 95%.

Undiscovered copper resource estimate, 95th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for cu_95.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 25000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_90
Attribute_Definition:
Undiscovered Cu, 90%.

Undiscovered copper resource estimate, 90th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for cu_90.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 49000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_50
Attribute_Definition:
Undiscovered Cu, 50%.

Undiscovered copper resource estimate, median (50th percentile) value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for cu_50.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 120000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_10
Attribute_Definition:
Undiscovered Cu, 10%.

Undiscovered copper resource estimate, 10th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for cu_10.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 220000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: cu_05
Attribute_Definition:
Undiscovered Cu, 5%.

Undiscovered copper resource estimate, 5th percentile value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for cu_05.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 240000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: mean_cu_t
Attribute_Definition:
Mean Cu tonnage.

Undiscovered copper resource estimate, mean value, in metric tons (t). Integer values. Integer of width .
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for mean_cu_t.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 12000
Range_Domain_Maximum: 130000000
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: prob_mean
Attribute_Definition:
Probability of mean.

Probability of the mean value, undiscovered copper resource estimate. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for prob_mean.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.03
Range_Domain_Maximum: 0.45
Attribute:
Attribute_Label: prob_0_cu
Attribute_Definition:
Probability of no Cu.

Probability of no undiscovered copper resources. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: -9999
Enumerated_Domain_Value_Definition:
Information not available for this record. 13 records have no value for prob_0_cu.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.97
Attribute:
Attribute_Label: shape_length
Attribute_Definition:
Perimeter.

Length of feature in internal units. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.05683807078
Range_Domain_Maximum: 87.4137205449
Attribute:
Attribute_Label: shape_area
Attribute_Definition:
Area.

Area of feature in internal units squared. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.01922248202
Range_Domain_Maximum: 19.4584252287
Attribute:
Attribute_Label: study_area
Attribute_Definition:
Study area name.

Geographic area of USGS report from which data were originally compiled. Textual values of no more than 68 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: quant
Attribute_Definition:
Quantitative assessment.

Dichotomous variable for whether or not a quantitative resource assessment was performed for tract. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: short_ref
Attribute_Definition:
Short reference.

Abbreviated citation for author and year of the USGS regional report from which data were originally compiled; full reference located in the lineage section of the metadata and listed in file geodatabase standalone table sedCu_references. Textual values of no more than 76 characters.
Attribute_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: commodity
Entity_Type_Definition:
Commodity names or symbols, separated and associated with their importance, to facilitate search.
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: gmrap_id
Attribute_Definition:
GMRAP ID.

Unique identifier for each record. [GMRAP, Global Mineral Resource Assessment Project.] Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: value
Attribute_Definition:
Commodity.

Commodity name or symbol, may include question mark in parentheses. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: role
Attribute_Definition:
Importance.

Importance of commodity at the site (major, minor, or trace) Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: minerals
Entity_Type_Definition: Mineral names, separated, to facilitate search.
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: gmrap_id
Attribute_Definition:
GMRAP ID.

Unique identifier for each record. [GMRAP, Global Mineral Resource Assessment Project.] Integer values. Integer of width 4.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: value
Attribute_Definition:
Mineral.

Mineral name, may indicate a group of related minerals, for rare minerals may include a chemical formula. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter N Schweitzer
Contact_Organization: Midwest Region
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey
National Center Mail Stop 954
12201 Sunrise Valley Dr
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Resource_Description: sir20105090z
Distribution_Liability:
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: WMS
Format_Version_Number: 1.3.0
Format_Information_Content:
Permissive tracts for porphyry copper and sediment hosted copper worldwide, with deposits and prospects used to delineate and characterize those tracts
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: shapefile
Format_Version_Number: 1.0
Format_Information_Content:
Shapefiles for permissive tracts and deposits and prospects, with complete attribute data in accompanying CSV files
Transfer_Size: 61
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: KML
Format_Version_Number: 2.2
Format_Information_Content:
Permissive tracts with links to detailed information on the web.
Transfer_Size: 67
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20161207
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Schweitzer, Peter, N
Contact_Organization: Eastern Mineral Resources Team
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive Mail Stop 954
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://mrdata.usgs.gov/metadata/sir-2010-5090-z.html>

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Page Contact Information: Peter Schweitzer
Page Last Modified: Friday, 15-Sep-2017 15:26:40 MDT

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