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Sediment-hosted gold deposits of the world

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Frequently anticipated questions:

What does this data set describe?

Title: Sediment-hosted gold deposits of the world
Abstract:
Location and characteristics of 123 sediment-hosted gold deposits worldwide.
  1. How might this data set be cited?
    Berger, Vladimir I., Mosier, Dan L., Bliss, James D., and Moring, Barry C., 2014, Sediment-hosted gold deposits of the world: Open-File Report 2014-1074, U.S. Geological Survey, Menlo Park, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -117.50333
    East_Bounding_Coordinate: 124.66639
    North_Bounding_Coordinate: 42.07972
    South_Bounding_Coordinate: 0.88722
  3. What does it look like?
    https://mrdata.usgs.gov/sedau/ofr-2014-1074.png (PNG)
    Global map image showing geographic distribution of the deposits included in this data source., (540 x 270 pixels)
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2014
    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 (123)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. 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 characteristics of mineral deposit (Source: this dataset)
    recno
    Record ID.

    Simple record number for this database. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:123
    Range of values
    Minimum:2
    Maximum:119
    Range of values
    Minimum:1
    Maximum:123
    Range of values
    Minimum:1
    Maximum:123
    Range of values
    Minimum:1
    Maximum:123
    Range of values
    Minimum:1
    Maximum:123
    aggrd0
    Grade Ag produced.

    Silver grade of produced ore (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 100 records have no value for aggrd0.
    Range of values
    Minimum:0.003
    Maximum:7
    Units:grams per tonne
    aggrd1
    Grade Ag open pit.

    Silver grade of resources amenable to open-pit mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 120 records have no value for aggrd1.
    Range of values
    Minimum:5
    Maximum:7.69
    Units:grams per tonne
    aggrd2
    Grade Ag underground.

    Silver grade of resources amenable to underground mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 122 records have no value for aggrd2.
    aggrd3
    Grade Ag total.

    Total silver grade of deposit (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 5 records have no value for aggrd3.
    Range of values
    Minimum:0
    Maximum:7
    Units:grams per tonne
    dep10km
    Associated deposits.

    Other deposits within 10 kilometers. Textual values of no more than 104 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 25 records have no value for dep10km.
    auprgrd
    Grade Au produced.

    Gold grade of produced ore (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 52 records have no value for auprgrd.
    Range of values
    Minimum:0.55
    Maximum:38.4
    Units:grams per tonne
    augrd0
    Grade cutoff Au open pit reserves.

    Minimum gold grade for reserves amenable to open-pit mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 88 records have no value for augrd0.
    Range of values
    Minimum:0
    Maximum:2
    Units:grams per tonne
    augrd1
    Grade Au open pit reserves.

    Gold grade of reserves amenable to open-pit mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 88 records have no value for augrd1.
    Range of values
    Minimum:0.55
    Maximum:7.9
    Units:grams per tonne
    augrd2
    Grade cutoff Au open pit resources.

    Minimum gold grade for resource amenable to open-pit mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 56 records have no value for augrd2.
    Range of values
    Minimum:0
    Maximum:2
    Units:grams per tonne
    augrd3
    Grade Au open pit resources.

    Gold grade of resource amenable to open-pit mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 56 records have no value for augrd3.
    Range of values
    Minimum:0.54
    Maximum:9.56
    Units:grams per tonne
    augrd4
    Grade cutoff Au underground resources.

    Gold grade of resource amenable to underground mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 101 records have no value for augrd4.
    Range of values
    Minimum:0
    Maximum:6.86
    Units:grams per tonne
    augrd5
    Grade Au underground resources.

    Gold grade of reserves amenable to underground mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 102 records have no value for augrd5.
    Range of values
    Minimum:3.3
    Maximum:14.9
    Units:grams per tonne
    augrd6
    Grade cutoff Au underground reserves.

    Minimum gold grade for reserve amenable to underground mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 103 records have no value for augrd6.
    Range of values
    Minimum:0
    Maximum:6.86
    Units:grams per tonne
    augrd7
    Grade Au underground reserves.

    Gold grade for reserve amenable to underground mining (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 104 records have no value for augrd7.
    Range of values
    Minimum:4.35
    Maximum:41.8
    Units:grams per tonne
    augrd8
    Grade Au total.

    Total gold grade of deposit (grams per tonne). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 5 records have no value for augrd8.
    Range of values
    Minimum:0.55
    Maximum:38.4
    Units:grams per tonne
    bedlens
    Beds or lenses.

    Presence of beds or lenses. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 16 records have no value for bedlens.
    comments
    Comments.

    Additional notes. Textual values of no more than 1111 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 1 records have no value for comments.
    autonne
    Contained Au.

    Total gold of deposit (tonnes). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 5 records have no value for autonne.
    Range of values
    Minimum:0.6
    Maximum:1230
    Units:tonnes
    country
    Country.

    Nation where deposit is found. Textual values of no more than 10 characters. (Source: this dataset) Textual values of no more than 10 characters.
    cntrycode
    Country abbrevation.

    Four character code of country and possible second order governmental units. Textual values of no more than 5 characters. (Source: this dataset)
    ValueDefinition
    CINAChina
    INDSIndonesia
    IRANIran
    MLYAMalaysia
    USIDIdaho, United States
    USNVNevada, United States
    USUTUtah, United States
    crushing
    Crushing or milling.

    Gold extraction by crushing and milling. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 61 records have no value for crushing.
    depage
    Deposit age chronologic.

    Radiometric age (Ma) of ore-related minerals. Textual values of no more than 75 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 90 records have no value for depage.
    depagegeol
    Deposit age geologic.

    Inferred geologic age of ore deposite. Textual values of no more than 51 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 12 records have no value for depagegeol.
    deparea
    Deposit area.

    Areal extent of deposit (square km). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 11 records have no value for deparea.
    Range of values
    Minimum:0.01
    Maximum:10
    Units:sq km
    depcluster
    Deposit cluster.

    Name of spatial grouping to which this deposit belongs as used by local geologists. Textual values of no more than 32 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 3 records have no value for depcluster.
    deplen
    Deposit length.

    Length (longest dimension of deposit) (km). Real numbers stored in double precision. (Source: this dataset)
    Range of values
    Minimum:0
    Maximum:8
    Units:km
    depshape
    Deposit shape.

    Deposit shape and structural style. Textual values of no more than 174 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 3 records have no value for depshape.
    depthick
    Deposit thickness.

    Thickness (narrowest direction of deposit) (m). Textual values of no more than 5 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 37 records have no value for depthick.
    depwidth
    Deposit width.

    Width (intermediate dimension) of deposit (km). Real numbers stored in double precision. (Source: this dataset)
    Range of values
    Minimum:0
    Maximum:1.9
    Units:km
    dikesill
    Dikes or sills.

    Presence of dikes or sills within deposit area. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 54 records have no value for dikesill.
    discdate
    Discovery date.

    Date of discovery. Textual values of no more than 23 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 30 records have no value for discdate.
    faultzone
    Fault zone.

    Presence of fault zone near the deposit. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 47 records have no value for faultzone.
    geochem
    Geochemical indicators.

    Elements of anomalous concentrations associated with the deposit. Textual values of no more than 41 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 18 records have no value for geochem.
    partsize
    Gold particle size.

    Average size of gold particles (m). Real numbers stored in double precision. (Source: this dataset)
    Range of values
    Minimum:0
    Maximum:51050
    Units:micrometers
    heapleach
    Heap leach.

    Au extraction by heap leach. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 39 records have no value for heapleach.
    introck
    Intrusive rock.

    Presence of intrusive rock within deposit area and in vicinity (2 km). Textual values of no more than 128 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 51 records have no value for introck.
    introckage
    Intrusive age.

    Age of associated intrusive rock (radiometric, in ma, or geologic age). Textual values of no more than 49 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 52 records have no value for introckage.
    latitude
    Geographic latitude.

    Latitude of deposit in decimal degrees (calculated from values in degrees, minutes, and seconds. Real numbers stored in double precision. (Source: this dataset)
    Range of values
    Minimum:0.887222222222222
    Maximum:42.0797222222222
    Units:decimal degrees
    latdeg
    Latitude degrees.

    Latitude component, degrees. Integer values. Integer of width 3. (Source: this dataset)
    Range of values
    Minimum:0
    Maximum:42
    Units:degrees
    latmin
    Latitude minutes.

    Latitude component, minutes. Integer values. Integer of width 2. (Source: this dataset)
    Range of values
    Minimum:0
    Maximum:59
    Units:minutes
    latsec
    Latitude seconds.

    Latitude component, seconds. Integer values. Integer of width 2. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:59
    Units:seconds
    locacc
    Location accuracy.

    Qualitative assessment of location accuracy. Textual values of no more than 12 characters. (Source: this dataset)
    ValueDefinition
    Accurate(Coordinates or other authoritative location information were provided in source references.)
    Approximate(Coordinates or other authoritative location information were not provided in source references.)
    longitude
    Geographic longitude.

    Longitude of deposit in decimal degrees (calculated from values in degrees, minutes, and seconds. Real numbers stored in double precision. (Source: this dataset)
    Range of values
    Minimum:-117.503333333333
    Maximum:124.666388888889
    Units:decimal degrees
    londeg
    Longitude degrees.

    Longitude component, degrees. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:-117
    Maximum:124
    Units:degrees
    lonmin
    Longitude minutes.

    Longitude component, minutes. Integer values. Integer of width 2. (Source: this dataset)
    Range of values
    Minimum:-59
    Maximum:59
    Units:minutes
    lonsec
    Longitude seconds.

    Longitude component, seconds. Integer values. Integer of width 2. (Source: this dataset)
    Range of values
    Minimum:-59
    Maximum:59
    Units:seconds
    depname
    Deposit name.

    Most recently used deposit name. Textual values of no more than 25 characters. (Source: this dataset) Textual values of no more than 25 characters.
    openpit
    Open pit.

    Mined or minable by open-pit techniques. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 24 records have no value for openpit.
    oreunit
    Ore bearing unit.

    Geologic unit of ore-bearing rock. Textual values of no more than 123 characters. (Source: this dataset) Textual values of no more than 123 characters.
    orethick
    Ore bearing unit thickness.

    Thickness of ore-bearing unit (m). Integer values. Integer of width 4. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 33 records have no value for orethick.
    Range of values
    Minimum:20
    Maximum:3000
    Units:meters
    orebreccia
    Ore breccia.

    Presence of breccia in ore. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 52 records have no value for orebreccia.
    owneroper
    Owner or operator.

    Legal owner of deposit. Textual values of no more than 94 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 25 records have no value for owneroper.
    prodton
    Production tonnage.

    Ore mined (tonnes). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 52 records have no value for prodton.
    Range of values
    Minimum:0.03
    Maximum:469
    Units:tonnes
    prodyear
    Production years.

    Years of gold production. Textual values of no more than 27 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 64 records have no value for prodyear.
    aurecovery
    Recovery Au.

    Percentage of gold recovered during extraction. Textual values of no more than 7 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 78 records have no value for aurecovery.
    rsvopyear
    Reserves open pit explanation.

    Reserve classification and year for deposits amenable for open-pit mining. Textual values of no more than 47 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 88 records have no value for rsvopyear.
    rsvtonop
    Reserve tonnage open pit.

    Tonnage of reserve for deposits amenable for open-pit mining. Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 88 records have no value for rsvtonop.
    Range of values
    Minimum:0.12
    Maximum:248
    Units:tonnes
    rsvugyear
    Reserves undergound explanation.

    Reserve classification and year for deposits amenable for underground mining. Textual values of no more than 33 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 104 records have no value for rsvugyear.
    rsvtonug
    Reserve tonnage undergound.

    Tonnage of reserve for deposits amenable for underground mining. Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 104 records have no value for rsvtonug.
    Range of values
    Minimum:0.06
    Maximum:16
    Units:tonnes
    rscopyear
    Resources open pit explanation.

    Resource classification and year for deposits amenable for open-pit mining. Textual values of no more than 52 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 70 records have no value for rscopyear.
    rsctonop
    Resources tonnage open pit.

    Tonnage of resource for deposits amenable for amenable for open-pit mining. Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 56 records have no value for rsctonop.
    Range of values
    Minimum:0.007
    Maximum:465
    Units:tonnes
    rsctonug
    Resources tonnage underground.

    Tonnage of resource for deposits amenable for amenable for underground mining. Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 102 records have no value for rsctonug.
    Range of values
    Minimum:0.038
    Maximum:80
    Units:tonnes
    rscugyear
    Resources underground explanation.

    Resource classification and year for deposits amenable for underground mining. Textual values of no more than 47 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 103 records have no value for rscugyear.
    srctongrd
    Source of tonnage, grade.

    Reference for tonnage and grade information. Textual values of no more than 114 characters. (Source: this dataset) Textual values of no more than 114 characters.
    startdate
    Startup date.

    Initial and resumed date of mining. Textual values of no more than 17 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 54 records have no value for startdate.
    stprov
    State or Province.

    Second order government units. Textual values of no more than 15 characters. (Source: this dataset) Textual values of no more than 15 characters.
    status
    Status.

    Status of mining or exploration of deposit. Textual values of no more than 22 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 6 records have no value for status.
    stockplu
    Stocks or plutons.

    Presence of stock or plutons within 2 km of deposits. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 102 records have no value for stockplu.
    structure
    Structural setting.

    Structural control of deposit. Textual values of no more than 129 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 3 records have no value for structure.
    subtype
    Subtype.

    deposit subtype. Textual values of no more than 8 characters. (Source: this dataset)
    ValueDefinition
    CarlinDeposit similar to those near Carlin, NV in the US.
    ChineseDeposit similar to those in China.
    tect_set
    Tectonic setting.

    Setting of deposit in regional tectonic unit. Textual values of no more than 125 characters. (Source: this dataset) Textual values of no more than 125 characters.
    tonnage
    Total tonnage.

    Total tonnage of deposit (production + reserver + resource). Real numbers stored in double precision. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 5 records have no value for tonnage.
    Range of values
    Minimum:0.2
    Maximum:497.3
    Units:tonnes
    undergrd
    Underground.

    Mined or minable by underground techniques. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 81 records have no value for undergrd.
    veinstock
    Vein stockwork.

    Presence of veins or stockwork. Textual values of no more than 4 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 109 records have no value for veinstock.
    names
    Additional names by which the deposit or site is known, or names of deposits included in the record by rules of proximity (Source: this dataset)
    recno
    Record ID.

    Unique identifier of the site within this database, a value of main:recno. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:123
    role
    Name role.

    Word indicating how this name relates to the site; as an alternate name (other) or included deposit (include). Textual values of no more than 8 characters. (Source: this dataset)
    ValueDefinition
    includeName refers to a part or component of the site.
    otherName is an alternate name for the same deposit.
    value
    Name.

    Alternative name or name of the included deposit. Textual values of no more than 24 characters. (Source: this dataset) Textual values of no more than 24 characters.
    minerals
    Minerals associated with the site,as gold-bearing, ore minerals, or gangue (Source: this dataset)
    recno
    Record ID.

    Unique identifier of the site within this database, a value of main:recno. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:123
    role
    Mineral role.

    Role the mineral has in the deposit: gold-bearing (gold), ore, or gangue. Textual values of no more than 8 characters. (Source: this dataset)
    ValueDefinition
    goldGold-bearing mineral
    oreValuable mineral not gold bearing
    gangueNon-salable mineral
    value
    Mineral.

    Name of the mineral. Textual values of no more than 46 characters. (Source: this dataset) Textual values of no more than 46 characters.
    alteration
    Types of alteration at the site (Source: this dataset)
    recno
    Record ID.

    Unique identifier of the site within this database, a value of main:recno. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:123
    value
    Alteration.

    Type of alteration reported in the deposit. Textual values of no more than 64 characters. (Source: this dataset) Textual values of no more than 64 characters.
    hostrock
    Types of host rock lithologies at the site (Source: this dataset)
    recno
    Record ID.

    Unique identifier of the site within this database, a value of main:recno. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:123
    value
    Rock type.

    Type of lithology associated with host rocks of the deposit. Textual values of no more than 64 characters. (Source: this dataset) Textual values of no more than 64 characters.
    ref
    Bibliographic references providing information about the site (Source: this dataset)
    recno
    Record ID.

    Unique identifier of the site within this database, a value of main:recno. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:123
    seq
    Sequence.

    Number giving the order in which this reference was shown in the original publication. Integer values. Integer of width 4. (Source: this dataset)
    Range of values
    Minimum:1
    Maximum:22
    reference
    Reference.

    Bibliographic reference, typically the long form such as is found in the list of references for a scientific paper. Textual values of no more than 512 characters. (Source: this dataset) Textual values of no more than 512 characters.
    onlink
    Online Linkage.

    URL, if present in the reference. Textual values of no more than 160 characters. (Source: this dataset)
    ValueDefinition
    (no value)Information not available for this record. 677 records have no value for onlink.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Berger, Vladimir I.
    • Mosier, Dan L.
    • Bliss, James D.
    • Moring, Barry C.
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Vladimir Berger
    PACIFIC REGION
    Contractor
    Mail Stop 901
    345 Middlefield Road
    Menlo Park, CA
    USA

    650-329-5731 (voice)
    650-329-5491 (FAX)
    vladimir@usgs.gov

Why was the data set created?

These data support new grade and tonnage models that should be helpful for mineral resource assessments depending on the geologic and mineralogical data available for a region.

How was the data set created?

  1. From what previous works were the data drawn?
    ofr20141074 (source 1 of 1)
    Berger, Vladimir I., Mosier, Dan L., Bliss, James D., and Moring, Barry C., 2014, Sediment-hosted gold deposits of the world: database and grade and tonnage models: Open-File Report 2014-1074, U.S. Geological Survey, Reston, VA.

    Online Links:

    Type_of_Source_Media: digital files
    Source_Contribution: Published source of these data
  2. How were the data generated, processed, and modified?
    Date: 12-May-2014 (process 1 of 1)
    Modified structure and format of these data for inclusion in the databases and map interfaces of https://mrdata.usgs.gov/

    Some data fields were modified to correct minor spelling errors and remove spaces from the middle of URLs given in the references.
  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?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Original report indicates 5 of the studied deposits lacked grade and tonnage information.
  5. How consistent are the relationships among the observations, including topology?
    Information about individual deposits was compiled from a variety of reference sources, cited and described in the data; these are not guaranteed to agree in all respects.

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)
    Schweitzer, Peter, N
    USGS Geology, Energy, and Minerals Science Center
    12201 Sunrise Valley Drive Mail Stop 954
    Reston, VA
    USA

    703-648-6533 (voice)
    pschweitzer@usgs.gov
  2. What's the catalog number I need to order this data set? USGS Open-File Report 2014-1074
  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: 19-Jan-2021
Metadata author:
Schweitzer, Peter, N
USGS Geology, Energy, and Minerals Science Center
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/ofr-2014-1074.faq.html>
Generated by mp version 2.9.50 on Tue Jan 19 16:16:48 2021