Carbonatites of the world, explored deposits of Nb and REE

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Berger, Vladimir I.
Originator: Singer, Donald A.
Originator: Orris, Greta J.
Publication_Date: 2009
Title: Carbonatites of the world, explored deposits of Nb and REE
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2009-1139

Publication_Information:

Publication_Place: Menlo Park, California
Publisher: Geological Survey (U.S.)

Online_Linkage: https://doi.org/10.3133/ofr20091139
Online_Linkage: https://mrdata.usgs.gov/carbonatite/

Description:

Abstract:

Data on 60 of the 527 known carbonatites in the world, providing reliable quantitative data on ore tonnages and grades of niobium and REE.

Purpose:

Assist in the creation of descriptive and grade-tonnage models for mineral deposits to support a new national mineral resource assessment. The models used for such an assessment must be based on information that is available for undiscovered deposits, including lithology, age, structural features, and geophysical and geochemical anomalies that are visible on regional geologic maps rather than the detailed studies commonly carried out on deposits that are well known.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2011

Currentness_Reference: revision date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: as needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -123.749167
East_Bounding_Coordinate: 127.1625
North_Bounding_Coordinate: 71.053611
South_Bounding_Coordinate: -30.884167

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: economic geology
Theme_Keyword: geospatial analysis
Theme_Keyword: geospatial datasets
Theme_Keyword: metallic ores
Theme_Keyword: metamorphic rocks

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data
Theme_Keyword: comma-delimited text
Theme_Keyword: HTML table
Theme_Keyword: KML
Theme_Keyword: OGC WMS
Theme_Keyword: shapefile
Theme_Keyword: tab-delimited text

Theme:

Theme_Keyword_Thesaurus: Mineral Resources Data System commodity types
Theme_Keyword: Niobium
Theme_Keyword: rare earth elements

Access_Constraints: none
Use_Constraints: none
Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dan L Mosier
Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing address
Address: 345 Middlefield Road Mail Stop 901
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025
Country: USA

Contact_Voice_Telephone: 650-329-5050
Contact_Electronic_Mail_Address: mosier@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: https://mrdata.usgs.gov/carbonatite/carbonatite-global.png
Browse_Graphic_File_Description:

Reduced-size image of the global distribution of deposits, (180 x 90 pixels)

Browse_Graphic_File_Type: PNG

Data_Quality_Information:

Logical_Consistency_Report:

An important consideration at the data-gathering stage is the question of what the sampling unit should be. Grade and tonnage data are available to varying degrees for districts, deposits, and mines. For the deposits in this model, the following rule was used to determine which ore bodies were combined. All mineralized rock or altered rock within two (2) kilometers was combined into one deposit. Some examples illustrate the effects of the application of this rule: (1) Salitre I and II deposits in Brazil and (2) Upper Fir and Fir in Canada. Carbonatite deposits are remote from one another

Completeness_Report:

This report is based on published tonnage and grade data on 58 Nb- and rare-earth-element (REE)-bearing carbonatite deposits that are mostly well explored and are partially mined or contain resources of these elements. The deposits represent only a part of the known 527 carbonatites around the world, but they are characterized by reliable quantitative data on ore tonnages and grades of niobium and REE.

Lineage:

Process_Step:

Process_Description:

Modified oreton field for record 34 (Ruri, Kenya) to 0.375 Mt in consultation with database author.

Process_Date: 20111207

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 60

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
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: main
Entity_Type_Definition: General descriptive information about the deposit
Entity_Type_Definition_Source: this dataset

Attribute:

Attribute_Label: rec_id
Attribute_Definition:

Record ID.

A distinct numerical identifier for the database record without further scientific significance. Integer values. Int of width 3.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 60
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: country
Attribute_Definition:

Country.

Name of the country where the deposit occurs. Textual values of no more than 28 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 28 characters.

Attribute:

Attribute_Label: cntrycd
Attribute_Definition:

Country code.

Coded abbreviation combining the country and state or province. Textual values of no more than 4 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ANGL
Enumerated_Domain_Value_Definition: Angola
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AUWA
Enumerated_Domain_Value_Definition: Australia: Western Australia
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BRND
Enumerated_Domain_Value_Definition: Burundi
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BRZL
Enumerated_Domain_Value_Definition: Brazil
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CINA
Enumerated_Domain_Value_Definition: China
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CNBC
Enumerated_Domain_Value_Definition: Canada, British Columbia
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CNON
Enumerated_Domain_Value_Definition: Canada, Ontario
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CNQU
Enumerated_Domain_Value_Definition: Canada, Quebec
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: DRCO
Enumerated_Domain_Value_Definition: Democratic Republic of the Congo
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: GABN
Enumerated_Domain_Value_Definition: Gabon
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: INDA
Enumerated_Domain_Value_Definition: India
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: KNYA
Enumerated_Domain_Value_Definition: Kenya
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MLWI
Enumerated_Domain_Value_Definition: Malawi
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MNGL
Enumerated_Domain_Value_Definition: Mongolia
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MRTA
Enumerated_Domain_Value_Definition: Mauritania
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: NMBA
Enumerated_Domain_Value_Definition: Namibia
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: NRWY
Enumerated_Domain_Value_Definition: Norway
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: RUSA
Enumerated_Domain_Value_Definition: Russia
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SAFR
Enumerated_Domain_Value_Definition: South Africa
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TNZN
Enumerated_Domain_Value_Definition: Tanzania
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TRKY
Enumerated_Domain_Value_Definition: Turkey
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UGND
Enumerated_Domain_Value_Definition: Uganda
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USAR
Enumerated_Domain_Value_Definition: United States, Arkansas
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USCA
Enumerated_Domain_Value_Definition: United States, California
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USCO
Enumerated_Domain_Value_Definition: United States, Colorado
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USWY
Enumerated_Domain_Value_Definition: United States, Wyoming
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: ZMBA
Enumerated_Domain_Value_Definition: Zambia
Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: stprov
Attribute_Definition:

State or Province.

State or province, if known, where the deposit occurs. Textual values of no more than 24 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 12 records have no value for stprov.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: depname
Attribute_Definition:

Deposit name.

The most recent deposit name. Textual values of no more than 16 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 16 characters.

Attribute:

Attribute_Label: altname
Attribute_Definition:

Other names.

Alternative names that have been used for the deposit. Textual values of no more than 20 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 38 records have no value for altname.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: includes
Attribute_Definition:

Includes.

The names of deposits that have been combined with the primary deposit as a result of the two-kilometer minimum separation rule. Textual values of no more than 16 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 58 records have no value for includes.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: latitude
Attribute_Definition:

Latitude.

Geographic latitude in decimal degrees, datum WGS84. South is negative, north positive. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -30.8841666666667
Range_Domain_Maximum: 71.0536111111111

Attribute:

Attribute_Label: latdeg
Attribute_Definition:

Latitude (degrees).

Degrees of latitude. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -30
Range_Domain_Maximum: 71
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: latmin
Attribute_Definition:

Latitude (minutes).

Minutes of latitude. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -59
Range_Domain_Maximum: 59
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: latsec
Attribute_Definition:

Latitude (seconds).

Seconds of latitude. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
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 latsec.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -58
Range_Domain_Maximum: 58
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: longitude
Attribute_Definition:

Longitude.

Geographic longitude in decimal degrees, datum WGS84. West is negative, east positive. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -123.749166666667
Range_Domain_Maximum: 127.1625

Attribute:

Attribute_Label: londeg
Attribute_Definition:

Longitude (degrees).

Degrees of lontitude. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -123
Range_Domain_Maximum: 127
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: lonmin
Attribute_Definition:

Longitude (minutes).

Minutes of longitude. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -56
Range_Domain_Maximum: 58
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: lonsec
Attribute_Definition:

Longitude (seconds).

Seconds of longitude. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
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 lonsec.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -59
Range_Domain_Maximum: 57
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: discdate
Attribute_Definition:

Discovery date.

Date the deposit was discovered. Textual values of no more than 11 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 27 records have no value for discdate.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: startdate
Attribute_Definition:

Startup date.

Date mining started. Textual values of no more than 18 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 38 records have no value for startdate.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: mintype
Attribute_Definition:

Mineral type.

Mineralogical subtype of the deposit, based on the dominant carbonate mineral composition and textural features. Textual values of no more than 41 characters.

Attribute_Definition_Source: this dataset
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 mintype.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: oreton
Attribute_Definition:

Tonnage.

Tonnage based on the total production, reserves, and resources at the lowest possible cutoff grade, in millions of metric tons. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
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 oreton.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.03
Range_Domain_Maximum: 2898

Attribute:

Attribute_Label: deptype
Attribute_Definition:

Deposit subtype.

Deposit type given in Cox and Singer (1986); all records have the value 10 for this field. Integer values. Int of width 2.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 10
Range_Domain_Maximum: 10
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: niobium
Attribute_Definition:

Niobium grade.

Niobium oxide grade in percent of oxide in the ore. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 2.86

Attribute:

Attribute_Label: ree
Attribute_Definition:

REE grade.

Rare earth element oxide grade in percent of oxide in the ore. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 6.3

Attribute:

Attribute_Label: p2o5
Attribute_Definition:

P2O5 grade.

Phosphorus grade as percent of oxide in the ore. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 25

Attribute:

Attribute_Label: grade_src
Attribute_Definition:

Grades.

Reference sources used to determine grade values. Textual values of no more than 181 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 181 characters.

Attribute:

Attribute_Label: depage
Attribute_Definition:

Age of deposit.

Quantitative age determinations for the deposit, indicating the method used and material dated, where available. Textual values of no more than 68 characters.

Attribute_Definition_Source: this dataset
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 depage.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: agemy
Attribute_Definition:

Age (m.y.).

Radiometric age reported in millions of years before the present based on measurements or midpoints of units from the geologic time scale. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 2047

Attribute:

Attribute_Label: tectset
Attribute_Definition:

Tectonic setting.

Type of tectonic unit hosting the deposit. Textual values of no more than 196 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 196 characters.

Attribute:

Attribute_Label: rocks
Attribute_Definition:

Rocks in deposit.

Rock types within the deposit and not reported on regional maps. Textual values of no more than 149 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 149 characters.

Attribute:

Attribute_Label: rocksmap
Attribute_Definition:

Rocks on map.

Country rocks recorded both in the deposits and on a regional map, along with the geologic age of the rocks. Textual values of no more than 126 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 126 characters.

Attribute:

Attribute_Label: ganguemin
Attribute_Definition:

Gangue minerals.

Gangue minerals present in the deposit. Textual values of no more than 279 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 279 characters.

Attribute:

Attribute_Label: orebody_fm
Attribute_Definition:

Orebody form.

General form of the carbonatite intrusion or alkali-carbonatite intrusive complex. Textual values of no more than 140 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 140 characters.

Attribute:

Attribute_Label: ore_a
Attribute_Definition:

Orebody A-axis.

Long axis of the two-dimensional projection of the ore body onto the surface, in km. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 14 records have no value for ore_a.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 18

Attribute:

Attribute_Label: ore_area
Attribute_Definition:

Orebody area.

General size of the carbonatite intrusion or intrusive complex. Textual values of no more than 6 characters.

Attribute_Definition_Source: this dataset
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 ore_area.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.3
Range_Domain_Maximum: 1327

Attribute:

Attribute_Label: ore_b
Attribute_Definition:

Orebody B-axis.

Short axis of the two-dimensional projection of the ore body onto the surface, in km. Textual values of no more than 5 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 14 records have no value for ore_b.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.3
Range_Domain_Maximum: 5.6

Attribute:

Attribute_Label: alttype
Attribute_Definition:

Alteration type.

Type of alteration present. Textual values of no more than 59 characters.

Attribute_Definition_Source: this dataset
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 alttype.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: altwidth
Attribute_Definition:

Alteration zone width.

Width of the alteration zone, in km. Real numbers stored in double precision.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 2.5

Attribute:

Attribute_Label: dep5km
Attribute_Definition:

Deposits within 5km.

Types of other mineral deposits found within 5km, values from Cox and Singer (1986). Textual values of no more than 22 characters.

Attribute_Definition_Source: this dataset
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 dep5km.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: dep10km
Attribute_Definition:

Deposits within 10km.

Types of other mineral deposits found between 5km and 10km away, values from Cox and Singer (1986). Textual values of no more than 16 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 56 records have no value for dep10km.

Enumerated_Domain_Value_Definition_Source: this dataset

Attribute:

Attribute_Label: comments
Attribute_Definition:

Comments.

Additional descriptive comments about the deposit. Textual values of no more than 1024 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:

Information not available for this record. 7 records have no value for comments.

Enumerated_Domain_Value_Definition_Source: this dataset

Detailed_Description:

Entity_Type:

Entity_Type_Label: minerals
Entity_Type_Definition: Mineralogy of the deposit as reported in scientific literature
Entity_Type_Definition_Source: this dataset

Attribute:

Attribute_Label: rec_id
Attribute_Definition:

Record ID.

A distinct numerical identifier for the database record without further scientific significance. Integer values. Int of width 3.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 60
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: value
Attribute_Definition:

Mineralogy.

Name of minerals reported as present in the deposit, without regard for their abundance. Most rock-forming minerals, such as feldspar, calcite, and quartz, are not included. Some variants of rock forming minerals that may be related to mineralization or alteration, such as Ag calcite, are included. Textual values of no more than 32 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain:

Textual values of no more than 32 characters. For some minerals, the name is followed in parentheses by the element symbol of the rare earth element contained within it.

Detailed_Description:

Entity_Type:

Entity_Type_Label: ref
Entity_Type_Definition:

Scientific literature consulted by the authors to characterize the deposit

Entity_Type_Definition_Source: this dataset

Attribute:

Attribute_Label: rec_id
Attribute_Definition:

Record ID.

A distinct numerical identifier for the database record without further scientific significance. Integer values. Int of width 3.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 60
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: value
Attribute_Definition:

Reference.

Papers and web sites that were used to describe the deposit. In a few cases unpublished sources were used. Textual values of no more than 400 characters.

Attribute_Definition_Source: this dataset
Attribute_Domain_Values:

Unrepresentable_Domain: Textual values of no more than 400 characters.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Geology, Energy, and Minerals Science Center

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing address
Address: 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA

Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov

Distribution_Liability:

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shapefile
Format_Version_Number: 1.0
Format_Information_Content: Deposit locations with geologic and economic characteristics
File_Decompression_Technique: unzip
Transfer_Size: 0.04

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://mrdata.usgs.gov/carbonatite/carbonatite.zip

Digital_Form:

Digital_Transfer_Information:

Format_Name: CSV
Format_Version_Number: 1.0
Format_Information_Content: Deposit locations with geologic and economic characteristics
File_Decompression_Technique: unzip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://mrdata.usgs.gov/carbonatite/carbonatite-csv.zip

Digital_Form:

Digital_Transfer_Information:

Format_Name: WMS
Format_Version_Number: 1.3.0
Format_Information_Content: Deposit locations with geological and economic characteristics

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://mrdata.usgs.gov/services/carbonatite?request=GetCapabilities&service=WMS&version=1.3.0

Digital_Form:

Digital_Transfer_Information:

Format_Name: WFS
Format_Version_Number: 1.0.0
Format_Information_Content: Deposit locations with geological and economic characteristics

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://mrdata.usgs.gov/wfs/carbonatite?request=GetCapabilities&service=WFS&version=1.0.0

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20210121
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Geology, Energy, and Minerals Science Center

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing address
Address: 12201 Sunrise Valley Drive
City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA

Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
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/ofr-2009-1139.html>