Rare earth element mines, deposits, and occurrences

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently anticipated questions:


What does this data set describe?

Title: Rare earth element mines, deposits, and occurrences
Abstract:
This dataset contains location, geologic and mineral economic data for world rare earth mines, deposits, and occurrences. The data in this compilation were derived from published and non-published sources. Geographic coordinates are provided for 577 of the 799 deposits described here.
  1. How might this data set be cited?
    Orris, Greta J., and Grauch, Richard I., 2002, Rare earth element mines, deposits, and occurrences: Open-File Report 02-189, Geological Survey (U.S.), Reston, Virginia.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -166.5
    East_Bounding_Coordinate: 175.8667
    North_Bounding_Coordinate: 71
    South_Bounding_Coordinate: -41.1
  3. What does it look like?
    https://mrdata.usgs.gov/ree/of02-189.png (PNG)
    Simplified map showing global distribution of REE deposits, (540 x 270 pixels)
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2002
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Entity point (577)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is World Geodetic System 1984.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.
  7. How does the data set describe geographic features?
    main
    Site description
    rec_id
    Record ID.

    Numeric record identifier without scientific significance. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:799
    Resolution:1
    deptype
    Deposit type.

    General category of mineral deposit. Textual values of no more than 10 characters.
    ValueDefinition
    carbCarbonatite
    carb-reCarbonatite with residual enrichment
    alk-igAlkalic igneous
    hyd-feoxHydrothermal Fe-oxide
    oth-ig-affOther igneous-affiliated (including pegmatites and veins)
    ion-adIon adsorption
    metMetamorphic
    placer-shPlacer, shoreline
    placer-alPlacer, alluvial
    placer-uncPlacer, uncertain origin
    placer-palPlacer, paleoplacer
    phosPhosphorite
    oth-bauxOther, Bauxite- or laterite-hosted
    oth-fOther, F deposits
    oth-pbOther, Pb deposits
    oth-uOther, Uranium deposits
    oth-uncOther, uncertain
    depname
    Site name.

    Name of the location, deposit, or mine. Textual values of no more than 89 characters.
    country
    Country.

    Country. Textual values of no more than 20 characters.
    stprov
    State or Province.

    State or province. Textual values of no more than 39 characters.
    ValueDefinition
    (no value)Information not available for this record. 252 records have no value for stprov.
    lat_dms
    Latitude (DMS).

    Latitude in degrees, minutes, and seconds, written like 39-48N. Textual values of no more than 16 characters.
    ValueDefinition
    (no value)Information not available for this record. 222 records have no value for lat_dms.
    lon_dms
    Longitude (DMS).

    Longitude in degrees, minutes, and seconds, written like 77-24W. Textual values of no more than 18 characters.
    ValueDefinition
    (no value)Information not available for this record. 222 records have no value for lon_dms.
    status
    Site status.

    Development status (mine, deposit, occurrence) possibly indicating activity. Textual values of no more than 60 characters.
    ValueDefinition
    (no value)Information not available for this record. 188 records have no value for status.
    age_info
    Geologic age.

    Geologic age estimates derived from radiometric dating. Textual values of no more than 88 characters.
    ValueDefinition
    (no value)Information not available for this record. 441 records have no value for age_info.
    company
    Company.

    Name of company owning the property. Textual values of no more than 70 characters.
    ValueDefinition
    (no value)Information not available for this record. 632 records have no value for company.
    comments
    Comments.

    Comments explaining descriptive fields. Textual values of no more than 273 characters.
    ValueDefinition
    (no value)Information not available for this record. 317 records have no value for comments.
    latitude
    Geographic latitude.

    Geographic latitude in decimal degrees WGS84 calculated from lat_dms, south values negative. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 222 records have no value for latitude.
    Range of values
    Minimum:-42.233333333333
    Maximum:71
    Units:decimal degrees
    longitude
    Geographic longitude.

    Geographic longitude in decimal degrees WGS84 calculated from lon_dms, west values negative. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 222 records have no value for longitude.
    Range of values
    Minimum:-166.5
    Maximum:175.86666666667
    Units:decimal degrees
    minerals
    Minerals present at the site
    rec_id
    Record ID.

    Record ID, a value of main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:799
    Resolution:1
    role
    Role of mineral.

    Role of mineral: REE-bearing, other ore, or gangue. Textual values of no more than 8 characters.
    abbr
    Abbreviation.

    Abbreviation used by the original authors to shorten the texts. Textual values of no more than 38 characters.
    name
    Mineral name.

    Mineral name derived from tables 2 and 3 of the report and some educated guesswork. Textual values of no more than 38 characters.
    hostrock
    Bibliography
    rec_id
    Record ID.

    Record ID, a value of main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:799
    Resolution:1
    value
    Lithology.

    Lithology terms (not controlled). Textual values of no more than 100 characters.
    resource
    Resource estimates
    rec_id
    Record ID.

    Record ID, a value of main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:799
    Resolution:1
    value
    Tonnage and grades.

    Tonnage and grades of commodity oxides, sometimes including year for which those estimates were given. Textual values of no more than 100 characters.
    reflink
    Reference links, an associative table linking deposits with references one to many
    rec_id
    Record ID.

    Record ID, a value of main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:799
    Resolution:1
    role
    Information provided.

    Subject for which the reference was applicable: location, resources, or general. Textual values of no more than 8 characters.
    reflink
    Short reference.

    Short reference like Woolley, 2001, links to bib:reflink. Textual values of no more than 140 characters.
    bib
    Bibliography
    ref_id
    Reference ID.

    Reference ID, a unique identifier of this reference. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:260
    Resolution:1
    reflink
    Short reference.

    Short reference like Woolley, 2001, links to ref:reflink. Textual values of no more than 64 characters.
    reference
    Bibliographic citation.

    Bibliographic citation, generally in standard USGS format. Textual values of no more than 663 characters.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Orris, Greta J.
    • Grauch, Richard I.
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Greta J Orris
    U.S. Geological Survey
    520 N. Park Avenue
    Tucson, AZ
    USA

    520-670-5583 (voice)
    greta@usgs.gov

Why was the data set created?

This dataset was compiled for the University of Arizona's Center for Mineral Resources Rare Earth monograph, a summary document intended to reflect our current knowledge of the geology and mineral economics of the rare earths, including yttrium.

How was the data set created?

  1. From what previous works were the data drawn?
    Harvey and others, 2002 (source 1 of 1)
    Harvey, S.E., Young, I., and Billingsley, G., 2002, Geology of the Hoidas Lake area, Ena Domain, northwestern Saskatchewan:.

    Online Links:

    This is part of the following larger work.

    Survey, Saskatchewan Geological, 2002, Summary of Investigations 2002, Volume 2: Saskatchewan Industry Resources, Miscellaneous Report 2002-4.2.

    Other_Citation_Details: CD-ROM, Paper C-2, 13p
    Type_of_Source_Media: digital file, online
    Source_Contribution: Corrected point location for record 299
  2. How were the data generated, processed, and modified?
    Date: 2001 (process 1 of 4)
    Data were separated into various fields (categories) within the Excel spreadsheet.
    Date: 30-Nov-2010 (process 2 of 4)
    Data reorganized in relational form for distribution through the USGS Mineral Resources Online Data Catalog Person who carried out this activity:
    Peter N Schweitzer
    USGS ER GD
    Geologist
    12201 Sunrise Valley Drive
    Reston, VA
    USA

    703-648-6533 (voice)
    703-648-6252 (FAX)
    pschweitzer@usgs.gov
    Date: 10-Nov-2011 (process 3 of 4)
    Corrected locations of records 707, 747, and 750 at the suggestion of Robert Callaghan. Those point locations were obviously erroneous. Revised locations were drawn from matching these records with the corresponding records in MRDS, and using the coordinates from MRDS. Person who carried out this activity:
    Peter N Schweitzer
    USGS ER GD
    Geologist
    12201 Sunrise Valley Drive
    Reston, VA
    USA

    703-648-6533 (voice)
    703-648-6252 (FAX)
    pschweitzer@usgs.gov
    Date: 14-Nov-2011 (process 4 of 4)
    Corrected location of record 299 at the suggestion of Robert Callaghan. That point location was obviously erroneous. Revised location was chosen as the location given for geochemical samples of the Jak zone in the http://er.gov.sk.ca/adx/aspx/adxGetMedia.aspx?DocID=11830,11827,11458,11455,11228,3385,5460,2936,Documents&MediaID=36540&Filename=harvey.pdf Person who carried out this activity:
    Peter N Schweitzer
    USGS ER GD
    Geologist
    12201 Sunrise Valley Drive
    Reston, VA
    USA

    703-648-6533 (voice)
    703-648-6252 (FAX)
    pschweitzer@usgs.gov
    Data sources used in this process:
    • Harvey and others, 2002
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    The accuracy of file data attributes is highly variable, especially for some parts of Africa and Asia. Most locations are believed to be within 2-5 minutes of the exact location; some locations are for the nearest town, and other locations are of undetermined accuracy. Location errors are a result of inadequate or incorrect original data, error caused by multiple locations with the same name, and error introduced by data entry or location format conversion. The data tables were spot-checked against the original data.
  2. How accurate are the geographic locations?
    The latitudes and longitudes were largely taken from Published data or determined from descriptions of the location using the maps available to us or internet-based gazeteers such as the GEOnet Names server on the National Imagery and Mapping Agency's database. The accuracy of these locations varies with the detail of the original information.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This report is the most complete compilation of rare earth mines, deposits, and occurrences known. However, it is highly likely that there are additional occurrences of rare earths that are not included. In addition, data for many of the sites are incomplete. Determination of latitudes and longitudes for some sites were impossible given the available data.
  5. How consistent are the relationships among the observations, including topology?
    Point data are given in degrees and minutes.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints: none
  1. Who distributes the data set? (Distributor 1 of 1)
    USGS Information Services
    Box 25286, Denver Federal Center
    Denver, Colorado
    USA

    1-888-ASK-USGS (voice)
    1-303-202-4695 (FAX)
    infoservices@usgs.gov
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 07-Dec-2016
Metadata author:
Schweitzer, Peter, N
Eastern Mineral Resources Team
12201 Sunrise Valley Drive Mail Stop 954
Reston, VA
USA

703-648-6533 (voice)
pschweitzer@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://mrdata.usgs.gov/metadata/of02-189.faq.html>
Generated by mp version 2.9.47 on Mon Mar 26 17:20:49 2018