Sediment-hosted copper deposits of the world

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Frequently anticipated questions:


What does this data set describe?

Title: Sediment-hosted copper deposits of the world
Abstract:
Characteristics of 785 deposits, including grade, tonnage, rocks, mineralogy, and references
  1. How might this data set be cited?
    Cox, Dennis P., Lindsey, David A., Singer, Donald A., and Diggles, Michael F., 2003, Sediment-hosted copper deposits of the world: Open-File Report 2003-107, Geological Survey (U.S.), Menlo Park, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -180
    East_Bounding_Coordinate: 180
    North_Bounding_Coordinate: 90
    South_Bounding_Coordinate: -60
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: Apr-2003
    Currentness_Reference:
    publication and revision dates
  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 (785)
    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
    General descriptive information about the deposit
    rec_id
    Record ID.

    A distinct numerical identifier for the database record without further scientific significance. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:785
    Resolution:1
    depname
    Deposit name.

    The most recent deposit name. Textual values of no more than 34 characters.
    altname
    Other names.

    Alternative names that have been used for the deposit. Textual values of no more than 46 characters.
    ValueDefinition
    (no value)Information not available for this record. 708 records have no value for altname.
    includes
    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 67 characters.
    ValueDefinition
    (no value)Information not available for this record. 722 records have no value for includes.
    cntrycd
    Country code.

    Coded abbreviation combining the country and state or province. Textual values of no more than 5 characters.
    latdeg
    Latitude degrees.

    Degrees of latitude. Integer values. Int of width 3.
    Range of values
    Minimum:-39
    Maximum:73
    Units:degrees
    Resolution:1
    latmin
    Latitude minutes.

    Minutes of latitude. Integer values. Int of width 2.
    ValueDefinition
    (no value)Information not available for this record. 2 records have no value for latmin.
    Range of values
    Minimum:-59
    Maximum:59
    Units:minutes
    Resolution:1
    latsec
    Latitude seconds.

    Seconds of latitude. Integer values. Int of width 2.
    ValueDefinition
    (no value)Information not available for this record. 291 records have no value for latsec.
    Range of values
    Minimum:-59
    Maximum:60
    Units:seconds
    Resolution:1
    londeg
    Longitude degrees.

    Degrees of lontitude. Integer values. Int of width 4.
    Range of values
    Minimum:-142
    Maximum:147
    Units:degrees
    Resolution:1
    lonmin
    Longitude minutes.

    Minutes of longitude. Integer values. Int of width 2.
    ValueDefinition
    (no value)Information not available for this record. 3 records have no value for lonmin.
    Range of values
    Minimum:-59
    Maximum:59
    Units:minutes
    Resolution:1
    lonsec
    Longitude seconds.

    Seconds of longitude. Integer values. Int of width 2.
    ValueDefinition
    (no value)Information not available for this record. 300 records have no value for lonsec.
    Range of values
    Minimum:-59
    Maximum:57
    Units:seconds
    Resolution:1
    oreton
    Ore tonnage.

    Total tons of ore based on total production, reserves, and resources at the lowest possible cutoff grade, in millions of metric tons. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 644 records have no value for oreton.
    Range of values
    Minimum:0.12
    Maximum:2600
    Units:million metric tons
    cugrd
    Copper grade.

    Average grade of copper for the deposit, as percent of metal in ore. Zero value means the grade (always for byproducts) was unavailable. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 644 records have no value for cugrd.
    Range of values
    Minimum:0.15
    Maximum:13
    Units:percent
    cogrd
    Cobalt grade.

    Average grade of cobalt for the deposit, as percent of metal in ore. Zero value means the grade (always for byproducts) was unavailable. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 767 records have no value for cogrd.
    Range of values
    Minimum:0.07
    Maximum:1.07
    Units:percent
    aggrd
    Silver grade.

    Average grade of silver for the deposit, as grams per metric ton of ore. Zero value means the grade (always for byproducts) was unavailable. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 744 records have no value for aggrd.
    Range of values
    Minimum:0.3
    Maximum:266
    Units:grams per metric ton
    country
    Country.

    Name of the country where the deposit occurs. Textual values of no more than 28 characters.
    stprov
    State or province.

    State or province, if known, where the deposit occurs. Textual values of no more than 21 characters.
    ValueDefinition
    (no value)Information not available for this record. 327 records have no value for stprov.
    deptype
    Type of deposit.

    Classification of the deposit. Textual values of no more than 17 characters.
    hostrock
    Host rock.

    Type of rocks hosting the ore body, in the same terms used in published maps and reports. Textual values of no more than 83 characters.
    ValueDefinition
    (no value)Information not available for this record. 42 records have no value for hostrock.
    rockunder
    Rock underlying.

    Type of rocks underlying the host rock, forming the footwall. Textual values of no more than 73 characters.
    ValueDefinition
    (no value)Information not available for this record. 687 records have no value for rockunder.
    depage
    Age of deposit.

    Age of the deposit expressed using standard divisions of geologic time or in millions of years, when available. Textual values of no more than 35 characters.
    ValueDefinition
    (no value)Information not available for this record. 6 records have no value for depage.
    agemy
    Age.

    Age of the deposit in millions of years before the present based on reported absolute (typically thermal dates) ages or midpoints of geologic time scale units. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 7 records have no value for agemy.
    Range of values
    Minimum:1
    Maximum:2400
    Units:million years
    rockover
    Rock overlying.

    Type of rocks overlying the host rock. Textual values of no more than 61 characters.
    ValueDefinition
    (no value)Information not available for this record. 714 records have no value for rockover.
    assoctype
    Associated Types.

    Supplementary information about the deposit type. Textual values of no more than 74 characters.
    ValueDefinition
    (no value)Information not available for this record. 616 records have no value for assoctype.
    comments
    Comments.

    Supplementary information. Textual values of no more than 212 characters.
    ValueDefinition
    (no value)Information not available for this record. 438 records have no value for comments.
    geolunit
    Geologic unit.

    Geologic unit code, a number matching polygons in XXXXXX. Textual values of no more than 49 characters.
    ValueDefinition
    (no value)Information not available for this record. 187 records have no value for geolunit.
    geolprov
    Geologic province.

    Name of the geologic province in which the deposit formed. Textual values of no more than 22 characters.
    ValueDefinition
    (no value)Information not available for this record. 592 records have no value for geolprov.
    latitude
    Latitude.

    Geographic latitude in decimal degrees, datum WGS84. South is negative, north positive. Real numbers stored in double precision.
    Range of values
    Minimum:-39.2166666666667
    Maximum:73.8
    Units:decimal degrees
    longitude
    Longitude.

    Geographic longitude in decimal degrees, datum WGS84. West is negative, east positive. Real numbers stored in double precision.
    Range of values
    Minimum:-142.866666666667
    Maximum:147.5
    Units:decimal degrees
    cuton
    Copper tonnage.

    Total tons of contained copper based on total production, reserves, and resources at the lowest possible cutoff grade, in millions of metric tons. Real numbers stored in double precision.
    ValueDefinition
    (no value)Information not available for this record. 644 records have no value for cuton.
    Range of values
    Minimum:0.00136
    Maximum:52
    Units:million metric tons
    continent
    Continent.

    Coded abbreviation for the continent. Textual values of no more than 2 characters.
    minerals
    Mineralogy of the deposit as reported in scientific literature
    rec_id
    Record ID.

    Numerical identifier for the deposit, matches a value in main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:785
    Resolution:1
    value
    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 71 characters.
    tracemin
    Trace minerals of the deposit as reported in scientific literature
    rec_id
    Record ID.

    Numerical identifier for the deposit, matches a value in main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:785
    Resolution:1
    value
    Mineralogy.

    Name of trace 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 76 characters.
    ref
    Scientific literature consulted by the authors to characterize the deposit
    rec_id
    Record ID.

    Numerical identifier for the deposit, matches a value in main:rec_id. Integer values. Int of width 4.
    Range of values
    Minimum:1
    Maximum:785
    Resolution:1
    value
    References.

    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 444 characters.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Cox, Dennis P.
    • Lindsey, David A.
    • Singer, Donald A.
    • Diggles, Michael F.
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Dennis P Cox
    USGS WR SW GD
    Volunteer
    345 Middlefield Road$Mail Stop 901
    Menlo Park, CA
    USA

    650-329-5328 (voice)
    650-329-5491 (FAX)
    dcox@usgs.gov

Why was the data set created?

National and global scale mineral resource assessments require information of this nature about specific types of mineral deposits

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
    Cox, Dennis P., Lindsey, David A., Singer, Donald A., and Diggles, Michael F., 2003, Sediment-hosted copper deposits of the world: Deposit models and database: Open-File Report 2003-107, Geological Survey (U.S.), Menlo Park, California.

    Online Links:


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


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? USGS Open File Report 03-107
  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:
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
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://mrdata.usgs.gov/metadata/of03-107.faq.html>
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