Metadata: Identification_Information: Citation: Citation_Information: Originator: Karl, N.A. Originator: Burger, M.H. Originator: Long, K.R. Publication_Date: 20180604 Title: Tin Deposits in the United States Geospatial_Data_Presentation_Form: Vector Digital Data Set Publication_Information: Publication_Place: Denver, CO Publisher: USGS ScienceBase Online_Linkage: https://doi.org/10.5066/P97JYNJL Description: Abstract: This data release provides descriptions of more than 120 mineral regions, mines, and mineral deposits within the United States that are reported to contain enrichments of tin (Sn). This data release only includes sites with publicly available records of past production of tin, or a defined resource of tin, or both. The inclusion of a particular mineral deposit in this database is not meant to imply that it has economic potential; it may be produced only as a byproduct at some sites. Rather, these deposits were included to capture the distribution of characteristics of the known, reported tin deposits in the United States. This logic also applies to the other commodities listed with tin in some occurrences. The primary uses for tin within the United States are for alloys, chemicals, and solder, amongst others. Tin has not been produced in the United States since 1993, and with the United States not having any active tin reserves the commodity has been deemed a critical strategic metal (Kamilli and others, 2017). As of 2017, the United States maintains a net import reliance as a percentage of apparent consumption of approximately 75 percent for tin, where 25 percent of the apparent consumption is attributed to the recycling of tin (U.S. Geological Survey, 2018). In the United States, tin most commonly occurs in the mineral cassiterite. The majority of tin occurrences are located in the state of Alaska, but tin is known to occur in many other locations in the contiguous United States. The cassiterite ore originates from various lode deposit types, including greisens, pegmatites, skarns, and veins, as well as from placers sourced from these systems. The entries and descriptions in the database were derived from published papers, reports, data, and internet documents representing a variety of sources, including geologic and exploration studies described in State, Federal, and industry reports. Although an attempt was made to capture as many examples as possible, this dataset is a progress report that is part of an ongoing effort. The authors welcome additional published information in order to continually update and refine this dataset. Purpose: This dataset is part of an ongoing effort by the U.S. Geological Survey (USGS) to understand the attributes and geologic distribution of critical mineral resources, both globally, and in particular, in the United States. As described in USGS Professional Paper 1802 (Schulz and others, 2017) the United States continues to become more dependent on imports to meet the domestic demands for an increasing number of mineral commodities. Many mineral commodities are now produced primarily or entirely outside of the United States, creating the potential for supply interruptions in the foreseeable future, or in the long term. These important but highly dependent mineral commodities are deemed critical and (or) strategic resources. Tin has been identified as a critical and strategic mineral in the Draft List of critical minerals by the USGS. Tin has a primary application for solder as well as flat-panel displays (indium-tin-oxide), where the top producer is China and the top supplier is Peru (U.S. Geological Survey, 2018). While tin is present in greisen, pegmatite, placer, and skarn deposits in the United States, the United States has not mined or smelted tin since 1993 and 1989, respectively. Recycling of tin occurs in the United States, where in 2017, 25 percent of the apparent consumption of tin was derived. The recycled material does not meet the United States demand for tin, and for this reason, the United States is reliant on tin resources of approximately 75 percent of net import reliance as a percentage of apparent consumption (U.S. Geological Survey, 2018b). This dataset was compiled to provide base layers of information that identify and describe the known tin deposits in the United States. This compilation is intended to contribute to our geologic understanding of tin deposits in the United States, and to assist in evaluating their resource potential. Kamilli, R.J., Kimball, B.E., and Carlin, J.F., Jr., 2017, Tin, chap. S of Schulz, K.J., DeYoung, J.H., Jr., Seal, R.R., II, and Bradley, D.C., eds., Critical mineral resources of the United States—Economic and environmental geology and prospects for future supply: U.S. Geological Survey Professional Paper 1802, p. S1–S53, https://doi.org/10.3133/ pp1802S. Schulz, K.J., DeYoung, J.H., Jr., Seal, R.R., II, and Bradley, D.C., eds., 2017, Critical mineral resources of the United States—Economic and environmental geology and prospects for future supply: U.S. Geological Survey Professional Paper 1802, 797 p., http://doi.org/10.3133/pp1802. U.S. Geological Survey, 2018, Draft list of critical minerals: Federal Register vol. 83, no. 33, p. 7065-7068, https://www.federalregister.gov/d/2018-03219 U.S. Geological Survey, 2018b, Mineral commodity summaries 2018: U.S. Geological Survey, 200 p., https://doi.org/10.3133/70194932. Supplemental_Information: The Esri ArcGIS 10.5 geodatabase (USGS_Tin_US.gdb) contains one point feature class, two polygon feature classes, eight attribute tables, and fifteen relationship classes. Relationship classes link tables using the Ftr_ID or Site_ID fields. Feature classes are also provided as Esri shapefiles; attribute tables are provided as Excel and comma-separated values (CSV) files. The description of each database layer (feature class) and attribute table is provided below, followed by general information about concepts and terms used in the development of the database. DATABASE LAYERS AND TABLES The Loc_Pt feature class contains point locations of mines, mineral occurrences (which includes deposits and prospects), and mineral regions, and the attribute information describes the location, source report, scale of the map used to obtain the location, and if the location has a polygonal footprint in the Loc_Poly feature class. In the database, all features have a point location, except for surface workings. In this database, all mineral regions are mining districts. The Loc_Poly feature class contains footprints or polygons of deposits, mineral districts, mining districts, and prospects. If a source report shows a location as a polygon, the polygon is digitized and the approximate centroid of the polygon is added to the Loc_Pt layer. Attribute information about the location is provided in the Loc_Pt layer. Mines are represented as points in the database, even when footprints are presented in source reports. Where possible, the approximate extent of the mining operation area, determined from imagery, is presented in the surface workings layer (see Loc_Poly_Sw). The Loc_Poly_Sw feature class contains the approximate area of mining-related activity, or “surface workings” as shown on Esri© imagery. These polygonal outlines have no corresponding point location in the database, nor do they have links to other tables. The attribute information for surface workings contains the date of the imagery and basic location information including state and county names. Surface workings must be at least 1,000 feet (approximately 300 meters) in one dimension to be digitized, and multiple workings that are 500 feet (approximately 150 meters) or less apart are combined into one outline. No attempt has been made to distinguish between the types of surface workings (for example, roads, pits, leach pads, waste piles, etc.), even when presented in source reports. The Site table is used to identify related features, such as a deposit and the mine(s) operating on it, or a mine and its related deposits. Each site has a unique identification value in the Site_ID field. The Site_ID is used in all tables except the References table. The Site table also indicates where information about a site occurs within the database. For example, if the Resources field in the Site table contains the value “Yes”, resource information is available in the Resources table. The GeolMinOcc table contains information about the geology of mineral deposits and prospects. Every attempt was made to compile information as reported in the source report. For example, if one source report states the valuable material as “cassiterite”, and another reports "wolframite and scheelite", the attribute field Value_Mat will contain all values. The value in the Ref_ID field is the primary source report for the record, for example, Page (1941). All information in the record comes from the primary source report unless an attribute field value contains a footnote denoted as a number in parentheses. If a record value is followed by a footnote, the Ref_ID is given in the Remarks field. Full citations for source reports are provided in the References table. The Resources table contains reported resource and reserve information for mineral deposits. Initial (or earliest resource data found by authors) and current resource data were compiled, even if information from intervening years was reported. Resource values were recorded as shown in source reports, including year reported, resource amount, units, and classification system(s). The definition of terms (for example, inferred, proven, probable, etc.) used in various resource classification systems may change through time. If resources or reserves are reported for a group of features rather than an individual deposit, the Ftr_ID will show “-1111” and the resource or reserve is assigned to the “site” or Site_ID that groups those deposits in the Site table. For consistency, resource values are converted to International System of Units (SI) units by the USGS authors. Where gold and silver values are reported in ounces in the source report, troy ounces were assumed when converting to SI units. The Production table contains published production data for mines. Production is listed by commodity and reported as shown in the source reports. If production is reported annually, production is totaled by the authors for the time period defined by the Year_From and Year_To values. If production is reported for a group of features, the Ftr_ID will show “-1111” and the production is assigned to the “site” or Site_ID that groups those mines in the Site table. For consistency, production values are converted to International System of Units (SI) units by the USGS authors. Where gold and silver values are reported in ounces in the source report, troy ounces were assumed when converting to SI units. The History table contains information derived from publicly available sources regarding the status of a mine, prospect, deposit, or mineral region through time. Values in the Status field indicate a condition or phase for the time period stated in the Year_From and Year_To fields. This information may not reflect the current status of a feature. For example, if the attribute record shows the status of a mine is “Active” and the Year_From and Year_To dates are 1920 and 1992 respectively, the mine was active from 1920 to 1992; it is unknown if the mine is still active. The Last_Updt field shows the date that the record was last updated by the authors. The Dep_Model table contains mineral deposit model and geoenvironmental model classifications for a deposit. If a deposit model classification could not be determined from published sources, the deposit model was assigned based on available geologic information and denoted as “USGS Authors (2018)” in the DpMD_RefID field. The Descr_Sum table contains relevant descriptions found in source reports. These descriptions are attributed according to the type of description, such as Geology, Resource, Production, History, etc. Descriptions pertain to individual features or to larger sites. The authors do not paraphrase or combine descriptions, and therefore, when a database feature is described in multiple reports, the feature will have multiple entries. The References table contains the citation of the map or report(s) from which the point, polygon, or attribute information was obtained. The table also assigns a short reference Ref_ID that is used throughout the database. GENERAL INFORMATION Mines are a man-made feature associated with the process of extracting, processing, or concentrating ore materials. In this database, mines have a point location, and where possible, the polygon boundary showing the extent of surface workings identified from imagery. No attempt is made to distinguish specific mine features like pits, dumps, tailings, etc. within the surface workings outline. Mineral occurrences, defined as a concentration of a mineral considered potentially valuable, are attributed as deposits and prospects in the database. Mineral deposits have defined size and grade indicated by current and (or) past production, and (or) a resource estimate. Prospects have sufficient data to describe at least two dimensions and the presence of useful or valuable minerals or materials. Mineral showings, or the occurrence of potentially valuable minerals as indicated by geological examination or analyses of samples, are not included in the database. Mineral regions are attributed as mineral districts, or mining districts. Mineral districts are areas, usually designated by name, defined by a group of deposits of similar type, origin, and/or commodity. Mining districts represent historic administrative areas organized by miners under the mining laws of the United States. Mining districts are typically an area containing a group of mines that exploited the same or related commodity. Mineral region polygons may overlap. The locations of mines, mineral occurrences, and mineral regions are commonly represented as points in source maps and reports, and occasionally as footprints (polygon outlines). In this database, all features have a point location, and some have an additional polygonal footprint. Surface workings in the Loc_Poly_Sw feature class are the exception—they do not have a corresponding point location or attribute information in the point layer. Otherwise, for points that have polygonal boundaries, the point attribute field Loc_Poly contains the value “Yes” and type of boundary is described in the field Poly_Def (for example, “Outline of ore”, “Approximate extent of mineralized zone on map”, or “Mineral District outline”). Each point and polygon feature is uniquely identified by a Ftr_ID. The Site_ID is used to indicate groups of related features, or “sites”. Tables are linked (related) using the Ftr_ID or the Site_ID fields. Some tables have more than one record describing a feature. For example, a point denoting a mine location may have many records in the Production table summarizing the dates and amounts of material produced. The database is designed to allow the user to navigate from the point or polygon layers to the linked table information or from the tables to the point and polygon layers. All database information is derived from publicly available sources. The Last_Updt field shows the date that the record information was last updated by the authors. Full citations are listed in the References table, and each citation is assigned a short citation used as an identification (ID) in the database. In each feature class and table, the primary reference is noted in the Ref_ID field. Auxiliary references are enumerated after attribute field values, and the corresponding short reference is in the Remarks field. For example, the Commodity field shows “spodumene; cassiterite (1)”. This indicates the commodity “spodumene” was derived from the primary reference denoted in the Ref_ID field as “Page and others (1953)” and “cassiterite” was derived from a secondary reference denoted in the Remarks field as “(1) Gardner (1939)”. There is no relevance to the order of data presented in lists. For example, if the Commodity field shows “nickel; cobalt; copper”, that is the order in which those commodities were compiled by the authors, and does not represent the order of importance. Additionally, in the GeolMinOcc table, lists in different fields do not relate. For example, if the Commodity field shows “nickel; cobalt; copper”, the Value_Mat field may list related ore minerals in a different order. Similarly, the data lists reflect the order in which the information was compiled. Listed fields are present in the Site, Loc_Pt, and GeolMinOcc tables. Attribute records that are blank, or contain a "Null" value in the geodatabase, were checked for available data, and no data were found. Some fields have all blank values if the authors were unable to locate relevant published information. These blank fields are maintained in the database structure for consistency with related USGS products and for possible future use if information becomes available. Two points may occupy the same location. This occurs when there is a deposit with a mine, and the location of either the mine or the deposit is unknown. For example, a report provides a map showing the location of a deposit. The report also provides production data for underground “Mine X” that is mining the deposit, but does not provide the location of “Mine X”. In this case, a second point representing “Mine X” is placed at the point location of the deposit. Polygon features may overlap. Viewing polygons as outlines without color fills will show where polygon overlap occurs. In the attribute section of this metadata, attribute fields from all tables and feature classes are listed in alphabetic order; corresponding feature classes and tables are listed in parentheses after the field name in the ‘Attribute_Label’. For example, “Mat_Amnt (Production, Resources)” indicates the attribute field Mat_Amnt (material amount) occurs in the Production table and in the Resources table. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1922 Ending_Date: 2018 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -168.1665 East_Bounding_Coordinate: -79.1447 North_Bounding_Coordinate: 66.2836 South_Bounding_Coordinate: 31.4397 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: Alexandria Digital Library Feature Type Thesaurus Theme_Keyword: mineral deposit areas Theme_Keyword: mine sites Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: mineral deposits Theme_Keyword: mineral resources Theme_Keyword: economic geology Theme_Keyword: geospatial datasets Theme_Keyword: natural resource exploration Theme_Keyword: arsenic Theme_Keyword: beryllium Theme_Keyword: bismuth Theme_Keyword: cerium Theme_Keyword: copper Theme_Keyword: gold Theme_Keyword: iron Theme_Keyword: lanthanum Theme_Keyword: lead Theme_Keyword: lithium Theme_Keyword: mercury Theme_Keyword: molybdenum Theme_Keyword: niobium Theme_Keyword: rare earth elements Theme_Keyword: rhenium Theme_Keyword: samarium Theme_Keyword: silver Theme_Keyword: tantalum Theme_Keyword: thorium Theme_Keyword: tin Theme_Keyword: titanium Theme_Keyword: tungsten Theme_Keyword: uranium Theme_Keyword: zinc Theme_Keyword: zirconium Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: mineral deposit type Theme_Keyword: mineral commodity Theme_Keyword: mineral occurrence Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: USGS Mineral Deposit Database Theme_Keyword: Bureau of Land Management Theme_Keyword: BLM Theme_Keyword: mine Theme_Keyword: open pit mine Theme_Keyword: underground workings Theme_Keyword: feldspar Theme_Keyword: fluorite Theme_Keyword: mica Theme_Keyword: phosphorus pentoxide Theme_Keyword: platinum-group elements Theme_Keyword: tantalum-niobium Theme_Keyword: cassiterite Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Alabama Place_Keyword: California Place_Keyword: Colorado Place_Keyword: New Mexico Place_Keyword: South Dakota Place_Keyword: Texas Place_Keyword: Virginia Place_Keyword: Washington Place_Keyword: Wyoming Place_Keyword: Alaska Access_Constraints: None. Please see 'Distribution Info' for details. Use_Constraints: There is no guarantee concerning the accuracy of the data. Any user who modifies the data is obligated to describe the types of modifications they perform. Data have been checked to ensure the accuracy. If any errors are detected, please notify the originating office. The U.S. Geological Survey strongly recommends that careful attention be paid to the metadata file associated with these data. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to https://www2.usgs.gov/laws/privacy.html for the USGS disclaimer. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nick A. Karl Contact_Organization: U.S. Geological Survey, Southwest Region: Geology, Geophysics, and Geochemistry Science Center Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing address Address: Post Office Box 25046, Mail Stop 973 City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Country: United States Contact_Voice_Telephone: 303-236-1222 Contact_Facsimile_Telephone: 303-236-3200 Contact_Electronic_Mail_Address: nkarl@usgs.gov Data_Set_Credit: The data sets were developed by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center (GGGSC) with support from the Bureau of Land Management Solid Minerals Program. Database reviews and contributions were made by USGS personnel George Case. Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200); Esri ArcGIS 10.5.1 (Build 7333) Service Pack N/A (Build N/A) Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Unique values in attribute fields were checked through frequency analyses. The unique values in each attribute field were reviewed and checked for spelling, consistency of terms, accuracy, adherence to established vocabularies, and completeness. When converting from an ArcGIS Enterprise geodatabase attribute table to Excel, precision of numeric values may change. The values from the ArcGIS Enterprise geodatabase are accurate and should be used for any calculations or analyses. Logical_Consistency_Report: The locations of mines, mineral occurrences (which includes deposits and prospects), and mineral regions are represented as points, and some of these point locations have corresponding “footprints” or polygonal outlines. The polygonal footprint may represent the approximate outline of a mineral occurrence or mineral region. The exceptions are areas disturbed by mining-related activity, or surface workings, which are derived from imagery rather than published reports. Surface working outlines have no corresponding point location, nor do they have links to other tables. Polygonal outlines, except for surface workings, may overlap. Overlapping surface workings are merged into a single outline. Surface workings do not distinguish different types of mine features, such as pits, tailings piles, dumps, etc. Two points may occupy the same location. This occurs when there is a deposit with a mine, and the location of either the mine or the deposit is unknown. For example, a report provides a map showing the location of a deposit. The report also provides production data for underground “Mine X” that is mining the deposit, but does not provide the location of “Mine X”. In this case, a second point representing “Mine X” is placed at the point location of the deposit. Completeness_Report: Mine, mineral deposits, and mineral region geospatial and attribute data were compiled for the United States. Data were limited to publicly available sources that span the time period from 1922 to 2018. Common literature sources include government and private industry annual reports, NI 43-101 reports, journal articles, company websites, and USGS publications. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Locations of features were compiled from published coordinates and by digitizing from georeferenced raster images of maps or imagery. The locational accuracy of features is dependent on the accuracy of the source maps, which generally ranged in map scale from 1:10,000 to 1:1,000,000. The scale of the source maps was recorded as “Large” for 1:24,000 scale or larger, “Medium” for maps scales between 1:24,000 and 250,000; and “Small” for scales smaller than 1:250,000. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Vertical accuracy in the data set is not applicable. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Canadian Institute of Mining, Metallurgy and Petroleum Publication_Date: 2014 Title: CIM Definition Standards for Mineral Resources and Mineral Reserves Geospatial_Data_Presentation_Form: Other Publication_Information: Publication_Place: CIM Website Publisher: Canadian Institute of Mining, Metallurgy and Petroleum Online_Linkage: http://web.cim.org/standards/MenuPage.cfm?sections=177&menu=178 Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2014 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: CIM (2014) Source_Contribution: Reference used by the authors to develop standardized vocabularies for the database and attribute tables. The use of this reference is denoted as CIM (2014) in this metadata. Source_Information: Source_Citation: Citation_Information: Originator: American Geological Institute Publication_Date: 1997 Title: Dictionary of Mining, Mineral, and Related Terms, Second Edition Geospatial_Data_Presentation_Form: Publication (Book) Publication_Information: Publication_Place: Virginia Publisher: American Geological Institute Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1997 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: AGI (1997) Source_Contribution: Reference used by the authors to develop standardized vocabularies for the database and attribute tables. The use of this reference is denoted as AGI (1997) in this metadata. Source_Information: Source_Citation: Citation_Information: Originator: American Geological Institute Publication_Date: 2011 Title: Glossary of Geology, Fifth Edition, Revised Geospatial_Data_Presentation_Form: Publication (Book) Publication_Information: Publication_Place: Virginia Publisher: American Geological Institute Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2011 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: AGI (2011) Source_Contribution: Reference used by the authors to develop standardized vocabularies for the database and attribute tables. The use of this reference is denoted as AGI (2011) in this metadata. Process_Step: Process_Description: A literature search of publicly available mineral resource information was conducted for tin element occurrences in the United States. Priority was given to identifying existing databases or compilations with high quality locations and data attributes that could be utilized directly in a geographic information system (GIS). The literature search identified sources of data on active mines, mineral occurrences, mineral regions, and resource and production data. Relevant information was acquired, reviewed for quality and geospatial information, and prioritized for digital data capture. Mines described in published reports were captured as point locations and attributed to show mining activity in the History table and mine production in the Production table. Where possible, the approximate extent of the mining operation area was captured from imagery and presented in the surface workings layer (see Loc_Poly_Sw). Surface workings were digitized if the ground disturbance was at least 1,000 feet (300 meters) in one dimension. The outlines of adjacent surface workings were merged if they were within 500 feet (150 meters) of one another. Mineral occurrences, defined as a concentration of a mineral considered potentially valuable, were compiled and attributed as deposits and prospects. Mineral deposits have defined size and grade indicated by current and (or) past production, and (or) a resource estimate; prospects have sufficient data to describe at least two dimensions and the presence of useful or valuable minerals or materials. Mineral occurrences were represented as points and also as polygons if the aerial extent or “footprint” of a prospect or deposit was available. Each polygon was attributed to describe the reported boundary type, such as the extent of the estimated resource, the grade limit or grade-thickness, or the limit of mineralization. The footprints of mineral deposits and prospects overlapped in some areas. Mineral regions were digitized as shown in the source reports, and thus may be represented as points or polygons. Mineral regions are attributed as, mineral districts, or mining districts. Mineral districts are areas, usually designated by name, defined by a group of deposits of similar type, origin, and/or commodity. Mining districts represent historic administrative areas organized by miners under the mining laws of the United States. Mining districts are typically an area containing a group of mines that exploited the same or related commodity. Mineral region polygons overlapped in some areas. All data were spatially integrated using ArcGIS. All attribute data were compiled from publicly available sources published between 1846 and 2016. Standardized vocabularies were developed by USGS authors and include definitions from CIM (2014), AGI (1997), and AGI (2011). Data were checked throughout the compilation process for accuracy of locations; and completeness, accuracy, and consistency of attributes. Process_Date: 2018 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: 121 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Fields Entity_Type_Definition: Fields containing attribute information associated with the data set. Attribute fields occur in data layer(s) noted in parentheses. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Alteration (GeolMinOcc) Attribute_Definition: Alteration associated with the mineralization in the mineral occurrence. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include albitized, contact metamorphism, hydrothermal, etc. Attribute: Attribute_Label: Approx_Lat (Site) Attribute_Definition: Approximate latitude (WGS84) of the middle of the site area. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 31.44 Range_Domain_Maximum: 65.667 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Approx_Lon (Site) Attribute_Definition: Approximate longitude (WGS84) of the middle of the site area. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -167.956 Range_Domain_Maximum: -79.145 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Assoc_Dep (Production) Attribute_Definition: Deposit(s) associated with the production. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Ftr_ID(s) for deposits from which production occurred. Attribute: Attribute_Label: Assoc_Mat (GeolMinOcc) Attribute_Definition: Associated materials occurring with the valuable material(s). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: A list of materials that occur with the valuable (ore) materials, but are not considered ore or valuable. Same as gangue for metallic mineral deposits. Attribute: Attribute_Label: COG_SI (Production, Resources) Attribute_Definition: Cut-off grade (CutOffGrad) reported by the source, converted to International System of Units (SI). The minimum and maximum values are for resources; no cut-off grade information was available for production values. Cut-off grade units vary by commodity and deposit, and are listed in the field COU_SI. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 0.1 Attribute_Units_of_Measure: See COU_SI. Attribute: Attribute_Label: Commodity (GeolMinOcc, Loc_Pt, Site) Attribute_Definition: Commodity(s) present or associated with the feature. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Commodity(s) reported for a mine, mineral occurrence, mineral region, or estimated resource and production. Attribute: Attribute_Label: Cont_Units (Production, Resources) Attribute_Definition: The units of weight reported for the contained commodity. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include tonnes, pounds, ounces, etc. Attribute: Attribute_Label: Contain_SI (Production, Resources) Attribute_Definition: The amount of contained commodity present in the ore (Contained) converted to International System of Units (SI). The minimum and maximum values listed below are from the Contain_SI field in the Resource table. The minimum and maximum values in the Production table range from 0.1 – 48 metric tons with variable units. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.4 Range_Domain_Maximum: 192,000,000 Attribute_Units_of_Measure: See ContUnitSI. Attribute: Attribute_Label: Contained (Production, Resources) Attribute_Definition: The amount of contained commodity present in the ore. The minimum and maximum values listed below are from the Resource table. The values for this field in the Production table range from 1.93 – 105,039 with variable units. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.4 Range_Domain_Maximum: 8,020,000,000 Attribute_Units_of_Measure: See Cont_Units. Attribute: Attribute_Label: ContUnitSI (Production, Resources) Attribute_Definition: The unit of weight reported for the contained commodity (Cont_Units) converted to International System of Units (SI). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values include metric tons, kilograms and grams. Attribute: Attribute_Label: COU_SI (Production, Resources) Attribute_Definition: Reported resource or production cutoff grade units (CutOffUnit) converted to International System of Units (SI). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values include percent. Attribute: Attribute_Label: County (Loc_Pt, Loc_Poly_Sw) Attribute_Definition: U.S. county name. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Name of the county where the feature is located. If the mine, mineral occurrence, or mineral region occurs in multiple counties, all county names are listed, separated by semicolons. Attribute: Attribute_Label: CutOffGrad (Production, Resources) Attribute_Definition: Reported resource or production cutoff grade. The minimum and maximum values listed below are for resources. The cutoff grade for production was not reported. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 0.1 Attribute_Units_of_Measure: See CutOffUnit. Attribute: Attribute_Label: CutOffUnit (Production, Resources) Attribute_Definition: Reported resource or production cutoff grade units. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values include percent. Attribute: Attribute_Label: Dep_Model (Site) Attribute_Definition: Indicates whether the deposit(s) on the site has been classified in the Dep_Model table. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Descr (Descr_Sum) Attribute_Definition: Provides a brief description of a feature identified by the Ftr_ID or Site_ID. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Text description reported by the source reference. Attribute: Attribute_Label: Descr_Sum (Site) Attribute_Definition: Indicates whether descriptions have been captured for the site in the Descr_Sum table. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Descr_Type (Descr_Sum) Attribute_Definition: Indicates the topic of the description. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values include Exploration, Geology, History, Mine, Production, Resource-Production, Resources, and Site. Attribute: Attribute_Label: DpMd_NoNm (Dep_Model) Attribute_Definition: Deposit model number and (or) name. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: The deposit model classification assigned to a deposit. Attribute: Attribute_Label: DpMd_RefID (Dep_Model) Attribute_Definition: The deposit model classification reference. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: The short reference, or Ref_ID, of the source report that provides geologic descriptions that help classify the mineral deposit model. Attribute: Attribute_Label: Ftr_Group (Loc_Pt) Attribute_Definition: A group to which a feature belongs, such as mine feature, mineral occurrence, or mineral region. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mine Feature Enumerated_Domain_Value_Definition: A man-made entity associated with the process of extracting, processing, or concentrating ore materials. The corresponding feature types (Ftr_Type) are Open Pit Mine and Underground Workings. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mineral Occurrence Enumerated_Domain_Value_Definition: Concentration of useful minerals or materials in sufficient quantity that it has been (or might be) exploited. The corresponding feature types (Ftr_Type) are Deposit or Prospect. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mineral Region Enumerated_Domain_Value_Definition: An area defined by a grouping of mines or mineral deposits or a geological environment permissive for mineral deposits. The corresponding feature type (Ftr_Type) is Mining District. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Ftr_ID (Dep_Model, Descr_Sum, GeolMinOcc, History, Loc_Poly, Loc_Poly_Sw, Loc_Pt, Production, Resources) Attribute_Definition: An identification assigned to a feature. A “-1111” value indicates that the record pertains to a group of related features. These features will have the same Site_ID but differing Ftr_IDs. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: The format of the identification pertains to the type of feature followed by a number. The format is Mo (for mineral occurrences), Mr (for mineral regions), or Mf (for mine features) followed by a 5-digit number, for example, “Mo00001”. Attribute: Attribute_Label: Ftr_Name (Dep_Model, GeolMinOcc, History, Loc_Poly, Loc_Poly_Sw, Loc_Pt, Production, Resources) Attribute_Definition: Published name of a database feature. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Current (preferred) form of the name of the mine, mineral occurrence, or mineral region. Attribute: Attribute_Label: Ftr_Type (GeolMinOcc, Loc_Pt) Attribute_Definition: Type of mine, mineral occurrence, or mineral region feature. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Deposit Enumerated_Domain_Value_Definition: A mineral occurrence with grade and size as determined by a reserve, or a resource estimate, or by production history. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mill Site Enumerated_Domain_Value_Definition: The site of a mineral processing plant. A plant referred to as a "mill" usually involves crushing and grinding as a part of the process. Enumerated_Domain_Value_Definition_Source: AGI (1997) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mineral District Enumerated_Domain_Value_Definition: An area, usually designated by name, defined by a group of deposits of similar type, origin, or commodity. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Mining District Enumerated_Domain_Value_Definition: A section of country usually designated by name, having described or understood boundaries within which minerals are found and worked under rules and regulations prescribed by the miners therein. There is no limit to its territorial extent and its boundaries may be changed if vested rights are not thereby interfered with. Enumerated_Domain_Value_Definition_Source: AGI (1997) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Open Pit Mine Enumerated_Domain_Value_Definition: Surficial mine, in which the valuable rock is exposed by removal of overburden. Enumerated_Domain_Value_Definition_Source: AGI (2011) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Placer Mine Enumerated_Domain_Value_Definition: The extraction and concentration of heavy metals or minerals from placer deposits by various methods, generally using running water. Enumerated_Domain_Value_Definition_Source: AGI (2011) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Portal Mine Enumerated_Domain_Value_Definition: A mine in which the main entry or access is by means of the mouth of an adit or tunnel. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Prospect Enumerated_Domain_Value_Definition: A mineral occurrence that has at least two dimensions (area) and evidence that useful minerals or materials are present, as indicated by analyses or the presence of valuable minerals. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Shaft Mine Enumerated_Domain_Value_Definition: A mine in which the main entry or access is by means of a shaft. Enumerated_Domain_Value_Definition_Source: AGI (1997) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Underground Workings Enumerated_Domain_Value_Definition: A mine feature that is specified by the data source as 'underground workings', or a group of underground mine features such as drifts, stopes, winzes, levels, etc. These features are projected to the surface. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: GEM_Name (Dep_Model) Attribute_Definition: Associated geoenvironmental model(s). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Geoenvironmental models are derived from the Deposit model classifying the deposit. Attribute: Attribute_Label: GEM_RefID (Dep_Model) Attribute_Definition: Identification for the reference. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Short reference, or Ref_ID, of the source report that contains the information used to select the appropriate geoenvironmental model for a mineral occurrence. Attribute: Attribute_Label: GeolMinOcc (Site) Attribute_Definition: Indicates whether data have been captured in the GeolMinOcc table for the mineral occurrence(s) on the site. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Grade (Production, Resources) Attribute_Definition: The reported numerical grade of the deposit. The minimum and maximum values listed below are from the Grade field in the Resources table. The minimum and maximum values in the Production table range from 0.23 – 66.5 with variable units. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.001 Range_Domain_Maximum: 47.799 Attribute_Units_of_Measure: See Grade_Unit. Attribute: Attribute_Label: Grade_Unit (Production, Resources) Attribute_Definition: The units of the reported numerical grade. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include percent, troy ounces per short ton, ounces per ton, etc. Attribute: Attribute_Label: GradeSI (Production, Resources) Attribute_Definition: The reported numerical grade (Grade) converted to International System of Units (SI). The minimum and maximum values listed below are from the GradeSI field in the Resources table. The minimum and maximum values in the Production table range from 0.23 – 66.5 with variable units. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.001 Range_Domain_Maximum: 47.8 Attribute_Units_of_Measure: See GradUnitSI. Attribute: Attribute_Label: GradUnitSI (Production, Resources) Attribute_Definition: The units of the reported grade (Grade_Unit) converted to International System of Units (SI). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include grams per metric ton, percent, weight percent, etc. Attribute: Attribute_Label: History (Site) Attribute_Definition: Indicates whether history data for the site have been captured in the History table. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Host_Age (GeolMinOcc) Attribute_Definition: The age of the lithological unit(s) that host, that are in direct contact with, or cut across the mineral occurrence (Host_Litho). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Age is recorded as it was stated in the source, this age may be reported as numeric values or chronostratigraphic units. Attribute: Attribute_Label: Host_Litho (GeolMinOcc) Attribute_Definition: The lithological unit(s) that host, that are in direct contact with, or cut across the mineral occurrence. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include limestone, granite, granodiorite, etc. Attribute: Attribute_Label: Host_Name (GeolMinOcc) Attribute_Definition: The formal name of lithological units that host the mineral occurrence. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Descriptive text, not abbreviated. Attribute: Attribute_Label: Last_Updt (Dep_Model, Descr_Sum, GeolMinOcc, History, Loc_Poly, Loc_Poly_Sw, Loc_Pt, Production, References, Resources) Attribute_Definition: The date that the record was last updated or revised by the USGS authors. Format is YYYY-MM-DD Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Date field. Attribute: Attribute_Label: Lat_WGS84 (Loc_Pt) Attribute_Definition: Latitude of the point location in decimal degrees (WGS84). The Pt_Def field indicates the type of location. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 31.439687 Range_Domain_Maximum: 65.666667 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Loc_Date (Loc_Poly_Sw, Loc_Pt) Attribute_Definition: The publication year of the map used to obtain the feature location. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: The year may differ from the publication date of the reference (identified by the Ref_ID). For example, the explanation for a location figure in a report states “Map from 2002”. The reference was published in 2003. In this case, “2002” is recorded in Loc_Date. Attribute: Attribute_Label: Loc_Poly (Loc_Pt, Site) Attribute_Definition: Indicates whether a polygon location(s) has been digitized for corresponding point locations. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Loc_Pt (Site) Attribute_Definition: Indicates whether the point location(s) has been captured for features on the site. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Loc_Scale (Loc_Pt) Attribute_Definition: Defines the accuracy of the location as Large, Medium, or Small depending on the scale of the map that the location was captured from. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Small (less than 1:250,000) Enumerated_Domain_Value_Definition: The representative fraction scale of the source map is 1:250,000 or smaller. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Medium (1:24,000-1:250,000) Enumerated_Domain_Value_Definition: The representative fraction scale of the source map is between 1:24,000 and 1:250,000. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Large (greater than 1:24,000) Enumerated_Domain_Value_Definition: The representative fraction scale of the source map is 1:24,000 or larger. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Long_WGS84 (Loc_Pt) Attribute_Definition: Longitude of the point location in decimal degrees (WGS84). The Pt_Def field indicates the type of location. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -167.956458 Range_Domain_Maximum: -79.144737 Attribute_Units_of_Measure: decimal degrees Attribute: Attribute_Label: Mat_Amnt (Production, Resources) Attribute_Definition: The reported amount of the material. The minimum and maximum values listed here are from the Mat_Amnt field in the Resources table. The minimum and maximum values in the Production table range from 0.2 – 19,910,000,000 with variable units. Negative number values indicate that the amount value is listed for two different commodities. For example, if the source says that there were 217,000 metric tons of ore containing 1 percent copper and 0.05 percent molybdenum, -217,000 would be entered in Mat_Amnt for each record (table row). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 1,991,000,000 Attribute_Units_of_Measure: See Mat_Units. Attribute: Attribute_Label: Mat_Type (Production, Resources) Attribute_Definition: Type of material in the resource or reserve estimate, or type of material produced from the mine. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: commodity Enumerated_Domain_Value_Definition: The final, valuable material that has been processed out of the ore material. The type of commodity is commonly represented in the final sales units such as ounces, pounds, flasks, etc. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: concentrate Enumerated_Domain_Value_Definition: Enriched ore material collected after a removal of waste in a mill or concentrator. The rejected waste material is known as tailings. Enumerated_Domain_Value_Definition_Source: AGI (2011) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: mill ore Enumerated_Domain_Value_Definition: An ore that needs preliminary treatment before it is of a sufficiently high grade to be acceptable for shipment or market. Enumerated_Domain_Value_Definition_Source: AGI (2011) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ore Enumerated_Domain_Value_Definition: The mixture of valuable materials along with gangue rocks and minerals. Ore is commonly represented in tons, metric tons, cubic yards, carloads, etc., and is usually associated with a grade(s) of valuable material(s) contained in a given amount of ore produced. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Mat_Units (Production, Resources) Attribute_Definition: The units of the material amount reported. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include troy ounces, pounds, metric tons, etc. Attribute: Attribute_Label: MatAmntSI (Production, Resources) Attribute_Definition: The reported amount of the material (Mat_Amnt) converted to International System of Units (SI). The minimum and maximum values listed here are from the MatAmntSI field in the Resources table. The minimum and maximum values in the Production table range from 0.068 – 903,100 with variable units. Negative number values indicate that the amount value is listed for two different commodities. For example, if the source says that there were 217,000 metric tons of ore containing 1 percent copper and 0.05 percent molybdenum, -217,000 would be entered in Mat_Amnt for each record (table row). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 53 Range_Domain_Maximum: 800000000 Attribute_Units_of_Measure: See MatUnitsSI. Attribute: Attribute_Label: Material (Production, Resources) Attribute_Definition: The material reported in the production value or resource estimate. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include tin, tungsten, etc. Attribute: Attribute_Label: MatUnitsSI (Production, Resources) Attribute_Definition: The units of the material amount reported (Mat_Units) after conversion to International System of Units (SI). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values include cubic meters, metric ton unit (tungsten trioxide), metric tons and kilograms. Attribute: Attribute_Label: Min_Style (GeolMinOcc) Attribute_Definition: Describes how the valuable materials occur. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include veins, particles, disseminated, etc. Attribute: Attribute_Label: MinReg_ID (Site) Attribute_Definition: Unique identification of a mineral region. MinReg_ID is the same as the Ftr_ID in the Loc_Pt table. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: In this database, mineral regions are mining districts that contain one or more mine or mineral occurrence features. Attribute: Attribute_Label: Other_Name (Loc_Pt, Site) Attribute_Definition: Other reported names of the district, mineral occurrence, mine, or site. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Descriptive text, not abbreviated. Attribute: Attribute_Label: Poly_Def (Loc_Pt) Attribute_Definition: Type of polygonal boundary. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Definitions of polygons are typically derived from map legends or source descriptions, and may include outline of mining districts, ore body outline, etc. Attribute: Attribute_Label: Prod_USD (Production) Attribute_Definition: Gross value of production from the mine in U.S. dollars. Dollars amounts are those at the time of the publication. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 71 Range_Domain_Maximum: 84.70 Attribute_Units_of_Measure: U.S. dollars Attribute: Attribute_Label: Production (Site) Attribute_Definition: Indicates whether the production data for the mine(s) on the site have been recorded in the Production table. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Pt_Def (Loc_Pt) Attribute_Definition: Point definition from source report or approximated by authors. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Points can be captured from a source report figure or map, or approximated by the authors to show a location of a mine (for example, center of pit). In cases where a mineral occurrence or mineral region boundary was available, the polygon was digitized and the point represents the approximate center of the polygon (centroid). Attribute: Attribute_Label: Rcvry_Amt (Production) Attribute_Definition: The amount of recovered material. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 93.4 Range_Domain_Maximum: 157,564 Attribute: Attribute_Label: Rcvry_Unit (Production) Attribute_Definition: Unit of weight of the recovered material. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Units include pounds and tons. Attribute: Attribute_Label: RcvryAmtSI (Production) Attribute_Definition: The amount of recovered material (Rcvry_Amt) converted to International System of Units (SI). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 71 Range_Domain_Maximum: 84.699997 Attribute: Attribute_Label: RcvryUntSI (Production) Attribute_Definition: Units of weight of the recovered material (Rcvry_Unit) converted to the International System of Units (SI). Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Units include metric tons and tonnes. Attribute: Attribute_Label: Ref_Detail (Dep_Model, History, Loc_Poly_Sw, Loc_Pt, Production, Resources) Attribute_Definition: The figure, page, map, etc. number that the data were recorded from. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: If the data occurs in a table on a certain page, the table name or number and page number are captured, for example, “Table 5, Page 10". Attribute: Attribute_Label: Ref_ID (Descr_Sum, GeolMinOcc, History, Loc_Poly_Sw, Loc_Pt, Production, References, Resources) Attribute_Definition: Shortened reference identification of the source report. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Identification includes author name(s) and publication year. Attribute: Attribute_Label: Reference (References) Attribute_Definition: Full reference of the source report. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: References are listed using USGS citation format. Attribute: Attribute_Label: Remarks (Dep_Model, Descr_Sum, GeolMinOcc, History, Loc_Poly, Loc_Poly_Sw, Loc_Pt, Production, Resources, Site) Attribute_Definition: Additional author comments, remarks, or information about the feature or data. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Descriptive text, not abbreviated. Attribute: Attribute_Label: Resources (Site) Attribute_Definition: Indicates whether the resource or reserve estimates for the deposit(s) on the site have been captured in the Resources table. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: No Enumerated_Domain_Value_Definition: No data were found or recorded in the attribute table at time of compilation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Yes Enumerated_Domain_Value_Definition: Data have been recorded in the attribute table. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Rsrc_Class (Resources) Attribute_Definition: Indicates how the resource or reserve was classified in the source report. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Descriptive text, not abbreviated. Attribute: Attribute_Label: Rsrc_Code (Resources) Attribute_Definition: Standard classification system used to classify and report the estimate, such as CIM or SEC. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SEC Enumerated_Domain_Value_Definition: U.S. Securities and Exchange Commission filings. The most common SEC form used in this database is a 10-K annual report pursuant to Section 13 or 15(d). Enumerated_Domain_Value_Definition_Source: https://www.sec.gov/ Attribute: Attribute_Label: Rsrc_Date (Resources) Attribute_Definition: Year of the resource estimate. If the value is blank, the date of the resource estimate is unknown and most likely does not equal the date of the resource source publication. Format is YYYY. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Date field. Attribute: Attribute_Label: Rsrc_Descr (Resources) Attribute_Definition: Indicates how the resource or reserve was reported in the source report. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include Resource, Reserve, Ore Reserve, etc. Attribute: Attribute_Label: Site_ID (Dep_Model, Descr_Sum, GeolMinOcc, History, Loc_Poly, Loc_Pt, Production, Resources, Site) Attribute_Definition: Unique identification assigned to a site. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Format is two-letter state abbreviation and a 5-digit number. For example, AK00001. Attribute: Attribute_Label: Site_Name (Site) Attribute_Definition: Site name assigned by authors. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Mine and mineral occurrence features are grouped into sites based on geological characteristics or location. Attribute: Attribute_Label: StatDetail (History) Attribute_Definition: Status detail that pertains to the type of activity that occurred during a specified time period, as shown in the Year_From and Year_To fields. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Additional information about the Status field. Values may include Discovery, Production, Drilling, Resource estimates, etc. Attribute: Attribute_Label: State (Loc_Poly_Sw, Loc_Pt) Attribute_Definition: U.S. state name abbreviation. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: State name abbreviated using 2-letter codes. Attribute: Attribute_Label: Status (History) Attribute_Definition: Activity that took place during a specified time period, as shown in the Year_From and Year_To fields. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Active Enumerated_Domain_Value_Definition: Indicates a mine is in full-time or intermittent production, or is selling from stockpiles. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Development Enumerated_Domain_Value_Definition: Indicates planning and studies are in progress or have been completed for the development of the mine, or that a mine is actively under development. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Discovery Enumerated_Domain_Value_Definition: The actual finding of a valuable mineral, indicative of a deposit. Legally, a discovery is a prerequisite to making a mining claim on an area. Enumerated_Domain_Value_Definition_Source: AGI (2011) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Evaluation Enumerated_Domain_Value_Definition: The fixing of a evaluation, not an appraisal. Used in preference of the word valuation which is often confused with appraisal. Enumerated_Domain_Value_Definition_Source: AGI (1997) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Exploration Enumerated_Domain_Value_Definition: The search for deposits of useful minerals or fossil fuels. It may include geologic reconnaissance, e.g. remote sensing, photogeology, geophysical and geochemical methods, and both surface and underground investigations. Establishing the nature of a known mineral deposit, preparatory to development. In the sense that exploration goes beyond discovery, it is a broader term than prospecting. Enumerated_Domain_Value_Definition_Source: AGI (2011) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Inactive Enumerated_Domain_Value_Definition: Indicates that a mine is not in production, is on care and maintenance, or is under reclamation. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Intermittent Exploration Enumerated_Domain_Value_Definition: The process of exploration that occurs at irregular intervals; not continuous or steady evaluation activity at the site. Enumerated_Domain_Value_Definition_Source: USGS Authors Attribute: Attribute_Label: Value_Mat (GeolMinOcc) Attribute_Definition: Valuable materials (minerals or rocks) that comprise the valuable constituents of a deposit. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: Values may include cassiterite, scheelite, wolframite, etc. Attribute: Attribute_Label: Year_From (History, Production) Attribute_Definition: First year of production or history. When mine production was intermittent, only the first and last year of reported production are shown. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: See Last_Updt (last updated) field for the currency of the values. Attribute: Attribute_Label: Year_To (History, Production) Attribute_Definition: Last year of production or history. When mine production was intermittent, only the first and last year of reported production are shown. Attribute_Definition_Source: USGS Authors Attribute_Domain_Values: Unrepresentable_Domain: See Last_Updt (last updated) field for the currency of the values. 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Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Person: USGS Information Services Contact_Address: Address_Type: mailing address Address: Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States of America Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Contact_Electronic_Mail_Address: sciencebase@usgs.gov Distribution_Liability: This database, Tin Deposits in the United States (https://doi.org/10.5066/P97JYNJL) has been approved for data release by the U.S. Geological Survey (USGS). Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the 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. The USGS shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Digital Data Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P97JYNJL Fees: None. No fees are applicable for obtaining the data set. Metadata_Reference_Information: Metadata_Date: 20180604 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nick A. Karl Contact_Organization: U.S. Geological Survey, Southwest Region: Geology, Geophysics, and Geochemistry Science Center Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing address Address: Post Office Box 25046, Mail Stop 973 City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Country: United States Contact_Voice_Telephone: 303-236-1222 Contact_Facsimile_Telephone: 303-236-3200 Contact_Electronic_Mail_Address: nkarl@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998