Identification_Information:
  Citation:
    Citation_Information:
      Originator: Jones, J.V., III
      Originator: Karl, S.M.
      Originator: Labay, K.A.
      Originator: Shew, N.B.
      Originator: Granitto, M.
      Originator: Hayes, T.S.
      Originator: Mauk, J.L.
      Originator: Schmidt, J.M.
      Originator: Todd, E.
      Originator: Wang, B.
      Originator: Werdon, M.B.
      Originator: Yager, D.B.
      Publication_Date: 2015
      Title:
        GIS-based Identification of Areas with Mineral Resource Potential 
        for Six Selected Deposit Types, Bureau of Land Management 
        Central Yukon Planning Area, Alaska
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
        Issue_Identification: 2015-1021
      Online_Linkage:
        http://pubs/usgs/gov/of/2015/1021
  Description:
    Abstract:
      Maps showing the estimated potential and relative certainty of
      various mineralization models in the Bureau of Land Management
      Central Yukon Planning Area, Alaska.
    Purpose:
      To estimate the potential of mineral resources in the Bureau of
      Land Management Central Yukon Planning Area using geographic
      information systems (GIS) analysis of muliple statewide datasets.
      The six mineral deposit models are:  1) REE-Th-Y-Nb deposits
      associated with peralkaline to carbonatitic intrusive rocks, 2) placer
      and paleoplacer Au, 3) PGE (-Co-Cr-Ni-Ti-V) deposits associated with
      mafic-to-ultramafic intrusive rocks, 4) carbonate-hosted Cu (-Co-Ag-Ge-Ga) deposits,
      5) sandstone U (-V-Cu) deposits, and 6) Sn-W-Mo (-Ta-In-fluorspar) deposits in
      specialized granites.  GIS data layers available for analysis include sediment
      and rock geochemistry, pan concentrate mineralogy and geochemistry, 
      Alaska Resource Data File, and regional geologic mapping.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2015
    Currentness_Reference: publication date
  Status:
    Progress: Planned
    Maintenance_and_Update_Frequency: Irregular
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -162.5
      East_Bounding_Coordinate: -142.9
      North_Bounding_Coordinate: 71.1
      South_Bounding_Coordinate: 62.3
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: mineral resource
      Theme_Keyword: mineral potential
      Theme_Keyword: REE
      Theme_Keyword: PGE
      Theme_Keyword: placer
      Theme_Keyword: U
      Theme_Keyword: strategic and critical minerals
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: Alaska
      Place_Keyword: Central Yukon Planning Area
      Place_Keyword: northern Alaska
  Access_Constraints: None
  Use_Constraints:
    None.  Acknowledgment of the U.S. Geological Survey would be
    appreciated in products derived from these data.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Timothy S. Hayes
      Contact_Position: Research Geologist
      Contact_Address:
        Address_Type: mailing and physical
        Address: 520 N. Park Avenue  Ste. 355
        City: Tucson
        State_or_Province: AZ
        Postal_Code: 85719
        Country: U.S.A.
      Contact_Voice_Telephone: 520-670-5024
      Contact_Electronic_Mail_Address: thayes@usgs.gov
  Data_Set_Credit:
    This data set was prepared by Matt Granitto, Keith Labay,
    Greg Lee, Jeanine Schmidt, and Nora Shew
  Native_Data_Set_Environment: Data was created using ESRI ArcGIS, version 10.2.
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      There were many sources of data of varying scale and positional
      accuracy used in these analyses.  These data are used to
      evaluate 12-digit HUC (hydrologic unit code) areas, which are
      large areas which encompass multiple drainage areas.
  Logical_Consistency_Report:
    Each polygon contains an estimate of potential and uncertainty
    of a particular mineral deposit model to be found in that polygon.
    Estimates are based on the proximity of certain favorable geologic
    conditions found in multiple statewide datasets.  Descriptions
    of the scoring methods for each model is described in the text
    portion of this publication.
  Completeness_Report:
    None of the datasets used in scoring the 12-digit HUCs has even
    distribution of data in the area of interest.  One of the purposes of this
    analysis is to use existing data to frame a better understanding of
    mineral resouces in the state of Alaska.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Matthew Granitto
          Originator: Jeanine M. Schmidt
          Originator: Nora B. Shew
          Originator: Bruce M. Gamble
          Originator: Keith A. Labay
          Publication_Date: 2013
          Title:
            Alaska Geochemical Database Version 2.0 (AGDB2) - Including
            "Best Value" data compilations for rock, sediment, soil, mineral,
            and concentrate sample media
          Geospatial_Data_Presentation_Form: tabular digital data
          Series_Information:
            Series_Name: USGS Data Series
            Issue_Identification: 759
          Online_Linkage: pubs.usgs.gov/ds/759/
      Type_of_Source_Media: DVD and online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2013
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: AGDB2
      Source_Contribution:
        AGDB2 is the USGS compilation of geochemical analyses of
        Alaska samples.  Sample media include rock, sediment, soil,
        mineral, and heavy-mineral concentrate.

        The stream sediment geochemistry used in the resource
        potential analyses is a compilation of data from AGDB2,
        Alaska Division of Geological and Geophysical Surveys
        (ADGGS), and the National Uranium Resource Evaluation
        (NURE) data set.  The AGDB2 contributed approximately
        55 percent of the total stream sediment geochemistry samples.

        Igneous rock geochemistry was collected from 3 sources,
        AGDB2, ADGGS, and from published literature.

        AGDB2 also contributed data on the mineralogy and
        geochemistry of nonmagnetic heavy mineral concentrates.
    Process_Step:
      Process_Description:
        AGDB2 "best value" stream sediment geochemistry was combined
        with similar data from ADGGS and NURE data sets.  The "best
        value" represents the value done by the better analytical method for
        samples that were analyzed by multiple methods.  A more detailed
        description of how "best value" is determined is available in the
        AGDB2 publication.

        The statistical measures of median, 75th, 91st, and 98th
        percentiles were calculated on the combined AGDB2, ADGGS,
        and NURE sediment data.  These analyses have been measured
        over a long period of time and have used different analytical
        methods with varying detection limits.  For elements with less
        than 50% censored data, the censored datum was replaced
        with either half the minimum non-censored value, or half of the
        minimum lower detection limit, whichever was smaller.  If the
        number of censored data was greater than 50%, then statistics
        were estimated using the Kaplan-Meier method.
      Process_Date: 2013
    Process_Step:
      Process_Description:
        Rock data from AGDB2 was combined with rock data from
        ADGGS.

        In addtion, a subset of AGDB2 and ADGGS rock data was
        combined with data from published literature to create an
        igneous rock geochemistry data base.  These data were
        used to analyze various ratios and other igneous rock
        indices.
      Process_Date: 2014
    Process_Step:
      Process_Description:
        The mineralogy and geochemistry of the nonmagnetic heavy
        mineral concentrates were each converted to a geodatabase.
      Process_Date: 2013
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Alaska Division of Geological and Geophysical Surveys
          Publication_Date: Unknown
          Title:
            WebGeochem:  DGGS Geochemical Sample Analysis Search
            website www.dggs.alaska.gov/webgeochem/
          Geospatial_Data_Presentation_Form: online
          Online_Linkage: www.dggs.alaska.gov/webgeochem/
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2013
        Source_Currentness_Reference: date of download
      Source_Citation_Abbreviation: ADGGS
      Source_Contribution:
        The ADGGS database provided about 6 percent of the analyses
        in the combined AGDB2, ADGGS, and NURE sediment
        geochemistry data set.

        ADGGS data comprises approximately 11% of the total rock
        geochemistry used in this project.
    Process_Step:
      Process_Description:
        The statistical measures of median, 75th, 91st, and 98th
        percentiles were calculated on the combined AGDB2, ADGGS,
        and NURE sediment data.  These analyses have been measured
        over a long period of time and have used different analytical
        methods with varying detection limits.  For elements with less
        than 50% censored data, the censored datum was replaced
        with either half the minimum non-censored value, or half of the
        minimum lower detection limit, whichever was smaller.  If the
        number of censored data was greater than 50%, then statistics
        were estimated using the Kaplan-Meier method.
      Process_Date: 2013
    Process_Step:
      Process_Description:
        Rock data from ADGGS was combined with rock data from
        AGDB2.

        In addtion, a subset of AGDB2 and ADGGS rock data was
        combined with data from published literature to create an
        igneous rock geochemistry data base.  These data were
        used to analyze various ratios and other igneous rock
        indices.
      Process_Date: 2014
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 2004
          Title:
            National Uranium Resource Evaluation (NURE) hydrogeochemical
            and stream sediment reconnaissance data
          Geospatial_Data_Presentation_Form: online database
          Series_Information:
            Series_Name: U.S. Geological Survey Open-File Report
            Issue_Identification: 97-492
          Online_Linkage:
            http://pubs.usgs.gov/of/1997/ofr-97-0492/
            or http://mrdata.usgs.gov/nure/sediment/
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2004
        Source_Currentness_Reference: date of download
      Source_Citation_Abbreviation: NURE
      Source_Contribution:
        The NURE data comprises approximately 38% of the analyses
        in the combined AGDB2, ADGGS, and NURE sediment
        geochemistry data set.
    Process_Step:
      Process_Description:
        The statistical measures of median, 75th, 91st, and 98th
        percentiles were calculated on the combined AGDB2, ADGGS,
        and NURE sediment data.  These analyses have been measured
        over a long period of time and have used different analytical
        methods with varying detection limits.  For elements with less
        than 50% censored data, the censored datum was replaced
        with either half the minimum non-censored value, or half of the
        minimum lower detection limit, whichever was smaller.  If the
        number of censored data was greater than 50%, then statistics
        were estimated using the Kaplan-Meier method.
      Process_Date: 2013
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 2008
          Title: Alaska Resource Data File (ARDF)
          Geospatial_Data_Presentation_Form: database
          Series_Information:
            Series_Name: U.S. Geological Survey Open-File Report
            Issue_Identification: 2008-1225
          Other_Citation_Details:
            data also available at:
            http://mrdata.usgs.gov/ardf
          Online_Linkage:
            http://ardf.wr.usgs.gov/
            http://mrdata.usgs.gov/ardf/
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2013
        Source_Currentness_Reference: data download
      Source_Citation_Abbreviation: ARDF
      Source_Contribution:
        ARDF was a contributing factor in the scoring of mineral
        resource potential.
    Process_Step:
      Process_Description:
        The ARDF is text based database containing descriptions of
        mines, prospects, and mineral occurrences in Alaska.  This
        project developed a method to 'quantify' ARDF records based
        on keywords in certain ARDF fields.  The keywords were
        weighted by relevance to the mineral deposit of interest and
        records were individually scored.  See this publication's text
        for more detailed description of the method.
      Process_Date: 2014
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Frederic H. Wilson
          Publication_Date: Unpublished material
          Title: Alaska geologic map
          Geospatial_Data_Presentation_Form: vector digital data
      Source_Scale_Denominator: 500000
      Type_of_Source_Media: geodatabase
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2013
        Source_Currentness_Reference: date data was copied
      Source_Citation_Abbreviation: state geologic map
      Source_Contribution:
        A generalized geologic map was produced from
        the geology of Alaska data set in early 2013.

        The geology of Alaska data set was also used to derive
        various lithology layers for the mineral resource potential
        analyses.
    Process_Step:
      Process_Description:
        The polygons of the Alaska geologic map were grouped
        based on the geologic age of the rock unit and
        general rock type (volcanic, igneous, sedimentary,
        metamorphic, or unconsolidated), and then the polygons
        were dissolved to create a generalized geologic map.
      Process_Date: 2013
    Process_Step:
      Process_Description:
        Polygons from the Alaska geologic map database were
        selected based on the presence and quantity of various rocks
        in the geologic unit description for the state map.  If the
        rock is present in the geologic unit, and the  amount of that
        rock is considered a 'major' (> 33%) or indeterminant portion
        of the unit, then the lithology is considered a 'major'
        proportion of that geologic unit.  If the amount is 'minor' or
        incidental, the lithology is considered a 'minor' proportion.

        Once polygons were selected based on rock and quantity,
        the polygons were dissolved.
      Process_Date: 2013
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Joseph S. Duval
          Publication_Date: 2001
          Title: Aerial gamma-ray surveys in Alaska
          Geospatial_Data_Presentation_Form: raster digital data
          Series_Information:
            Series_Name: U.S. Geological Survey Open-File Report
            Issue_Identification: 2001-128
          Online_Linkage: http://pubs.usgs.gov/of/2001/of01-128
      Type_of_Source_Media: CD-ROM
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2001
        Source_Currentness_Reference: publication date
      Source_Citation_Abbreviation: aerorad
      Source_Contribution:
        This source provides the measure of flux of gamma rays emitted
        due to radioactive decay of naturally occuring elements K40
        (potassium), U238 (uranium), and Th232 (thorium).  These data
        were used in the analyses for the REE, Sn-W, and sandstone
        U models.
    Process_Step:
      Process_Description:
        The original K, Th, and U data was converted to geotiffs.
        An additional Th/K image was also created.
      Process_Date: 2012
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 2013
          Title: Watershed boundary dataset
          Geospatial_Data_Presentation_Form: vector digital data
          Online_Linkage: http://nhd.usgs.gov/wbd.html
      Type_of_Source_Media: online
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2013
        Source_Currentness_Reference: 11/13/2013 (date of download)
      Source_Citation_Abbreviation: HUC
      Source_Contribution:
        The 12-digit HUC (hydrologic unit code) hydrologic units are
        used to define the area boundaries for the mineral resource
        analyses.
    Process_Step:
      Process_Description:
        Any of the 12-digit hydrologic unit polygons overlapping the
        area of the BLM Central Yukon planning area (CYPA) is
        included in this project's area of interest. All six models 
        included HUCs within a 100 km buffer to assist during evaluation.
      Process_Date: 2014
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: NAD 1983 Alaska Albers (Meters)
        Albers_Conical_Equal_Area:
          Standard_Parallel: 55.0
          Standard_Parallel: 65.0
          Longitude_of_Central_Meridian: -154.0
          Latitude_of_Projection_Origin: 50.0
          False_Easting: 0.0
          False_Northing: 0.0
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.001
          Ordinate_Resolution: 0.001
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.4
      Denominator_of_Flattening_Ratio: 297.9786982
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: REE_HUCs
      Entity_Type_Definition:
        Geodatabase feature class showing mineral resource  
        potential estimation for REE-Th-Y-Nb (-U-Zr) deposits  
        associated with peralkaline to carbonatitic instrusive rocks
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: HUC12
      Attribute_Definition:
        Field HUC12 contains the unique 12-digit hydrologic
        unit code identifying the sub-watershed area of the
        National Hydrography Dataset and Watershed Boundary
        Dataset.
      Attribute_Definition_Source:
        Watershed Boundary Dataset (WBD) of the Advisory
        Committee on Water Information (ACWI)
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 190201010301
          Range_Domain_Maximum: 190605021705
    Attribute:
      Attribute_Label: SED_SCORE (alias SEDIMENT_SCORE)
      Attribute_Definition:
        Presence of certain elements in sediment geochemistry.
        Possible score of 1, 2, or 3, depending on the measured
        value of Nb, Ce, Yb, or Th. See publication text
        for cut offs of each element. Higher scores will replace lower scores.
        A null score denotes that there were no sediment samples of any type
        present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: ARDF_SCORE
      Attribute_Definition: Scoring for the ARDF keyword search. A null score
        denotes that there were no ARDF samples of any type present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: keyword search TOTAL <= 2
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: keyword search TOTAL > 2 and TOTAL <= 5
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: keyword search TOTAL > 5
    Attribute:
      Attribute_Label: IGN_SCORE (alias IGNEOUS_SCORE)
      Attribute_Definition:
        Scores from igneous indices for ASI (aluminum saturation index),
        10000*Ga/Al (gallium over aluminum), or displacement of Fe#.
        Points are additive for a maximum of 3 points. See publication text
        for selection details.  A null score denotes that 
        there were no igneous samples of any type present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: AERORAD_SCORE
      Attribute_Definition: Score for Th/K value from aerorad data set.  A null score
        denotes that there were no ARDF samples of any type present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: Th/K value <= 5
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Th/K value > 5 and <= 12
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: Th/K value > 12
    Attribute:
      Attribute_Label: TOTAL_SCORE
      Attribute_Definition:
        The sum of the individual scores (SED_SCORE, IGN_SCORE,
        ARDF_SCORE, and AERORAD_SCORE)
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 16
    Attribute:
      Attribute_Label: SED_PCT (alias SEDIMENT_PCT)
      Attribute_Definition: The percentage of SED_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: ARDF_PCT
      Attribute_Definition: The percentage of ARDF_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: IGN_PCT (alias IGNEOUS_PCT)
      Attribute_Definition: The percentage of IGN_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: AERORAD_PCT
      Attribute_Definition:
        The percentage of the score from AERORAD_SCORE
        of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: POTENTIAL
      Attribute_Definition:
        Relative description of estimated potential of REE minerals
        in this HUC based on the scoring methodology for the REE
        deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: CERTAINTY
      Attribute_Definition:
        Relative description of certainty of the estimated potential
        of REE minerals in this HUC based on the scoring
        methodology for the REE deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: SYMBOL
      Attribute_Definition:
        Concatenation of POTENTIAL and CERTAINTY used to
        symbolize the HUC scoring graphic.
      Attribute_Definition_Source: this data source
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,HIGH
          Enumerated_Domain_Value_Definition: dark red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,MED
          Enumerated_Domain_Value_Definition: medium red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,LOW
          Enumerated_Domain_Value_Definition: light red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,HIGH
          Enumerated_Domain_Value_Definition: dark yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,MED
          Enumerated_Domain_Value_Definition: medium yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,LOW
          Enumerated_Domain_Value_Definition: light yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,HIGH
          Enumerated_Domain_Value_Definition: dark green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,MED
          Enumerated_Domain_Value_Definition: medium green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,LOW
          Enumerated_Domain_Value_Definition: light green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: UNKNOWN
          Enumerated_Domain_Value_Definition: dark gray
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: Placer_HUCs
      Entity_Type_Definition:
        Geodatabase feature class showing mineral resource potential
        estimation for placer and paleoplacer gold
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: HUC12
      Attribute_Definition:
        Field HUC12 contains the unique 12-digit hydrologic
        unit code identifying the sub-watershed area of the
        National Hydrography Dataset and Watershed Boundary
        Dataset.
      Attribute_Definition_Source:
        Watershed Boundary Dataset (WBD) of the Advisory
        Committee on Water Information (ACWI)
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 190201010301
          Range_Domain_Maximum: 190605021705
    Attribute:
      Attribute_Label: SED_SCORE (alias SEDIMENT_SCORE)
      Attribute_Definition:
        Presence of certain elements in sediment geochemistry.
        Possible score of 1 or 3, depending on the measured
        value of Au, Ag, Ti, or W. See publication text
        for cut offs of each element. Scores are additive
        A null score denotes that there were no sediment samples of any type
        present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 8
    Attribute:
      Attribute_Label: ARDF_SCORE
      Attribute_Definition: Scoring for the ARDF keyword search
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: keyword search TOTAL <= 0
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 10
          Enumerated_Domain_Value_Definition: keyword search TOTAL > 0
    Attribute:
      Attribute_Label: MIN_SCORE (alias MINERAL_SCORE)
      Attribute_Definition:
        Presence of certain minerals identified in pan concentrate
        mineralogy.  The score is additive unless gold is present which replaces
        the lower score with 10 points.
        If cassiterite, powellite, scheelite, cinnabar, monazite, or
        thorite is present, 1 point each.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 10
    Attribute:
      Attribute_Label: LITH_SCORE (alias LITHOLOGY_SCORE)
      Attribute_Definition:
        Presence of igneous or metaigneous rock units from the
        state geologic map
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition:
            An igneous or metaigneous geologic unit from the state
            geologic map is not present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition:
            A volcanic or metaigneous geologic unit on the state map is
            present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition:
            A plutonic rock as a minor component of a geologic unit
            on the state map is present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition:
            A plutonic rock as a major component of a geologic unit
            on the state map is present
    Attribute:
      Attribute_Label: STREAM_SCORE
      Attribute_Definition:
        Scores for HUCs downstream of areas with high potential for
        placer or paleoplacer gold
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition:
            Not considered downstream of a HUC with high potential for
            placer gold
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition:
            River or stream downstream of HUC with high potential for placer
            gold past intersection with equal or higher stream order segment
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition:
            River or stream greater than 25 km downstream of a HUC
            with high potential for placer gold
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 6
          Enumerated_Domain_Value_Definition:
            Within 25 km downstream of a HUC with high potential for
            placer gold
    Attribute:
      Attribute_Label: TOTAL_SCORE
      Attribute_Definition:
        The sum of the individual scores (SED_AU_SCORE, SED_AG_SCORE,
        SED_TI_SCORE, SED_W_SCORE, ARDF_SCORE, MINERAL_SCORE, 
        LITH_SCORE, and STREAM_SCORE)
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 37
    Attribute:
      Attribute_Label: ARDF_PCT
      Attribute_Definition: The percentage of ARDF_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: MINL_PCT (alias MINERAL_PCT)
      Attribute_Definition: The percentage of MIN_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: SED_PCT (alias SEDIMENT_PCT)
      Attribute_Definition:
        The percentage of the scores from sediment
        geochemistry data of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: LITH_PCT (alias LITHOLOGY_PCT)
      Attribute_Definition: The percentage of LITH_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: STREAM_PCT
      Attribute_Definition: The percentage of STREAM_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: POTENTIAL
      Attribute_Definition:
        Relative description of estimated potential of placer or
        paleoplacer Au in this HUC based on the scoring methodology
        for the placer or paleoplacer Au deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: CERTAINTY
      Attribute_Definition:
        Relative description of certainty of the estimated potential
        of placer or paleoplacer Au in this HUC based on the scoring
        methodology for the placer or paleoplacer Au deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: SYMBOL
      Attribute_Definition:
        Concatenation of POTENTIAL and CERTAINTY used to
        symbolize the placer or paleoplacer scoring graphic.
      Attribute_Definition_Source: this data source
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,HIGH
          Enumerated_Domain_Value_Definition: dark red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,MED
          Enumerated_Domain_Value_Definition: medium red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,LOW
          Enumerated_Domain_Value_Definition: light red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,HIGH
          Enumerated_Domain_Value_Definition: dark yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,MED
          Enumerated_Domain_Value_Definition: medium yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,LOW
          Enumerated_Domain_Value_Definition: light yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,HIGH
          Enumerated_Domain_Value_Definition: dark green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,MED
          Enumerated_Domain_Value_Definition: medium green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,LOW
          Enumerated_Domain_Value_Definition: light green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: UNKNOWN
          Enumerated_Domain_Value_Definition: dark gray
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: PGE_HUCs
      Entity_Type_Definition:
        Geodatabase feature class showing mineral resource potential 
        estimation for PGE (-Co-Cr-Ni-Ti-V) deposits associated with 
        mafic-to-ultramafic intrusive rocks
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: HUC12
      Attribute_Definition:
        Field HUC12 contains the unique 12-digit hydrologic
        unit code identifying the sub-watershed area of the
        National Hydrography Dataset and Watershed Boundary
        Dataset.
      Attribute_Definition_Source:
        Watershed Boundary Dataset (WBD) of the Advisory
        Committee on Water Information (ACWI)
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 190201010301
          Range_Domain_Maximum: 190605021705
    Attribute:
      Attribute_Label: SED_SCORE (alias SEDIMENT_SCORE)
      Attribute_Definition:
        Presence of certain elements in sediment geochemistry.
        Possible score of 1, 2, or 3, depending on the measured
        value of Co, Cr, Ni, Ti, V, Os, Pd, or Pt.  See publication text
        for cut offs of each element.  Higher scores will replace lower scores.
        A null score denotes that there were no sediment samples of any type
        present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: ARDF_SCORE
      Attribute_Definition:
        Presence of ARDF record with relative possibility of being
        a PGE deposit
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: No ARDF locality with PGE evidence
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: ARDF model is uncertain but may be permissible for PGEs
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: ARDF locality is permissible mode for PGEs
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition: ARDF locality has PGE potential or PGEs present
    Attribute:
      Attribute_Label: MIN_SCORE (alias MINERAL_SCORE)
      Attribute_Definition:
        Presence of chromite, copper-cobalt-sulfides, nickel-cobalt
        sulfides, nickel sulfides, chromite-nickel sulfides,
        serpentine, Cr-diopside, or chalcopyrite in the heavy
        mineral concentrate mineralogy.  Also includes scores
        for high on ARDF keyword search if deposit is a placer.
        See publication text for point allocation.  Higher scores 
        will replace lower scores.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: RCK_SCORE (alias ROCK_SCORE)
      Attribute_Definition:
        Presence of certain elements in rock geochemistry.  Possible
        score of 1, 2, or 3 depending on measured value of Co, Cr,
        Ni, TiO2, V, Ir, Pd, Rh, or Ru.  See publication text for cut offs
        of each element.  Higher scores will replace lower scores
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: HMC_SCORE (alias HEAVY_MIN_CONC_SCORE)
      Attribute_Definition:
        Possible score of 1, 2, or 3 depending on presence of 
        Ir, Os, Pd, Pt, Rh, Ru, Co, Cr, Ni, Ti, or V
        in the geochemistry analyses of heavy mineral concentrates.
        See publication text for cut offs for each element.
        Higher scores will replace lower scores
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: LITH_SCORE (alias LITHOLOGY_SCORE)
      Attribute_Definition:
        Presence of mafic or ultramafic rock units on the state
        geologic map
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition:
            A mafic or ultramafic geologic unit on the state geologic map
            is not present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition:
            A mafic or ultramafic rock as a minor component of a
            geologic unit on the state map is present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition:
            A mafic or ultramafic rock as a major component of a
            geologic unit on the state map is present
    Attribute:
      Attribute_Label: TOTAL_SCORE
      Attribute_Definition:
        The sum of the individual scores (LITH_SCORE,
        RCK_SCORE, HMC_SCORE, SED_SCORE,
        MIN_SCORE and ARDF_SCORE).
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 17
    Attribute:
      Attribute_Label: SED_PCT (alias SEDIMENT_PCT)
      Attribute_Definition: The percentage of SED_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: ARDF_PCT
      Attribute_Definition: The percentage of ARDF_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: MIN_PCT (alias MINERAL_PCT)
      Attribute_Definition: The percentage of MIN_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: RCK_PCT (alias ROCK_PCT)
      Attribute_Definition: The percentage of RCK_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: HMC_PCT (alias HEAVY_MIN_CONC_PCT)
      Attribute_Definition: The percentage of HMC_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: LITH_PCT (alias LITHOLOGY_PCT)
      Attribute_Definition: The percentage of LITH_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: POTENTIAL
      Attribute_Definition:
        Relative description of estimated potential for PGE deposits
        in this HUC based on the scoring methodology
        for the PGE deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: CERTAINTY
      Attribute_Definition:
        Relative description of certainty of the estimated potential
        for PGE deposits in this HUC based on the scoring
        methodology for the PGE deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: SYMBOL
      Attribute_Definition:
        Concatenation of POTENTIAL and CERTAINTY used to
        symbolize the PGE scoring graphic.
      Attribute_Definition_Source: this data source
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,HIGH
          Enumerated_Domain_Value_Definition: dark red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,MED
          Enumerated_Domain_Value_Definition: medium red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,LOW
          Enumerated_Domain_Value_Definition: light red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,HIGH
          Enumerated_Domain_Value_Definition: dark yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,MED
          Enumerated_Domain_Value_Definition: medium yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,LOW
          Enumerated_Domain_Value_Definition: light yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,HIGH
          Enumerated_Domain_Value_Definition: dark green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,MED
          Enumerated_Domain_Value_Definition: medium green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,LOW
          Enumerated_Domain_Value_Definition: light green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: UNKNOWN
          Enumerated_Domain_Value_Definition: dark gray
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: CuCarb_HUCs
      Entity_Type_Definition:
        Geodatabase feature class showing mineral resource potential 
        estimation for carbonate-hosted Cu (-Co-Ag-Ge-Ga) deposits
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: HUC12
      Attribute_Definition:
        Field HUC12 contains the unique 12-digit hydrologic
        unit code identifying the sub-watershed area of the
        National Hydrography Dataset and Watershed Boundary
        Dataset.
      Attribute_Definition_Source:
        Watershed Boundary Dataset (WBD) of the Advisory
        Committee on Water Information (ACWI)
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 190201010301
          Range_Domain_Maximum: 190605021705
    Attribute:
      Attribute_Label: SED_SCORE (alias SEDIMENT_SCORE)
      Attribute_Definition:
        Presence of certain elements in sediment geochemistry.
        Possible score of 1, 2, or 3, depending on the measured
        value of Cu.  See publication text for element cut offs.  
        Higher scores will replace lower scores. A null score denotes
        that there were no sediment samples of any type present in the HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: SEDTR_SCORE (alias SEDIMENT_TRACE_SCORE)
      Attribute_Definition:
        Presence of certain trace elements in sediment geochemistry.
        Possible score of 1 depending on the measured
        values of Co, Ge, Ga, and Ag.  See publication text for element cut offs.  
        Scores for each trace element will be added together.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 4
    Attribute:
      Attribute_Label: ARDF_SCORE
      Attribute_Definition:
        Presence of ARDF record with relative possibility of being
        a Cu carbonate deposit
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: No ARDF locality with Cu carbonate evidence
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: ARDF model is uncertain but may be permissible for Cu carbonate
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 5
          Enumerated_Domain_Value_Definition: ARDF locality has Cu carbonate potential or Cu carbonate present
    Attribute:
      Attribute_Label: MIN_SCORE (alias MINERAL_SCORE)
      Attribute_Definition:
        Presence of chalcopyrite, copper-cobalt-sulfides, copper sulphates,
        copper sulfide/copper oxide, azurite, cuprite, enargite, and
        malachite in the heavy mineral concentrate mineralogy.
        See publication text for point allocation. Scores will be added together. 
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 8
    Attribute:
      Attribute_Label: RCK_SCORE (alias ROCK_SCORE)
      Attribute_Definition:
        Presence of certain elements in rock geochemistry.
        Possible score of 1, 2, or 3, depending on the measured
        value of Cu.  See publication text for element cut offs.  
        Higher scores will replace lower scores.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 3
    Attribute:
      Attribute_Label: RCKTR_SCORE (alias ROCK_TRACE_SCORE)
      Attribute_Definition:
        Presence of certain trace elements in rock geochemistry.
        Possible score of 1 depending on the measured
        values of Co, Ge, Ag, and Ga.  See publication text for element cut offs.  
        Scores for each trace element will be added together.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 4
    Attribute:
      Attribute_Label: LITH_SCORE (alias LITHOLOGY_SCORE)
      Attribute_Definition:
        Presence of carbonate rock units on the state
        geologic map
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: NULL
          Enumerated_Domain_Value_Definition:
            A carbonate geologic unit on the state geologic map
            is not present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition:
            A carbonate rock as a minor component of a
            geologic unit on the state map is present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition:
            A carbonate rock as a major component of a
            geologic unit on the state map is present
    Attribute:
      Attribute_Label: TOTAL_SCORE
      Attribute_Definition:
        The sum of the individual scores (SED_SCORE, SEDTR_SCORE,
        ARDF_SCORE, MIN_SCORE, RCK_SCORE, RCKTR_SCORE, and LITH_SCORE).
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 20
    Attribute:
      Attribute_Label: SED_PCT (alias SEDIMENT_PCT)
      Attribute_Definition: The percentage of SED_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: SEDTR_PCT (alias SEDIMENT_TRACT_PCT)
      Attribute_Definition: The percentage of SEDTR_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: ARDF_PCT
      Attribute_Definition: The percentage of ARDF_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: MIN_PCT (alias MINERAL_PCT)
      Attribute_Definition: The percentage of MIN_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: RCK_PCT (alias ROCK_PCT)
      Attribute_Definition: The percentage of RCK_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: RCKTR_PCT (alias ROCK_TRACT_PCT)
      Attribute_Definition: The percentage of RCKTR_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: LITH_PCT (alias LITHOLOGY_PCT)
      Attribute_Definition: The percentage of LITH_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: POTENTIAL
      Attribute_Definition:
        Relative description of estimated potential for PGE deposits
        in this HUC based on the scoring methodology
        for the Cu carabonate deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: CERTAINTY
      Attribute_Definition:
        Relative description of certainty of the estimated potential
        for PGE deposits in this HUC based on the scoring
        methodology for the Cu carbonate deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: SYMBOL
      Attribute_Definition:
        Concatenation of POTENTIAL and CERTAINTY used to
        symbolize the PGE scoring graphic.
      Attribute_Definition_Source: this data source
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,HIGH
          Enumerated_Domain_Value_Definition: dark red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,MED
          Enumerated_Domain_Value_Definition: medium red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,LOW
          Enumerated_Domain_Value_Definition: light red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,HIGH
          Enumerated_Domain_Value_Definition: dark yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,MED
          Enumerated_Domain_Value_Definition: medium yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,LOW
          Enumerated_Domain_Value_Definition: light yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,HIGH
          Enumerated_Domain_Value_Definition: dark green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,MED
          Enumerated_Domain_Value_Definition: medium green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,LOW
          Enumerated_Domain_Value_Definition: light green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: UNKNOWN
          Enumerated_Domain_Value_Definition: dark gray
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: SandU_HUCs
      Entity_Type_Definition:
        Geodatabase feature class showing mineral resource potential 
        estimation for sandstone U (-V-Cu) deposits
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: HUC12
      Attribute_Definition:
        Field HUC12 contains the unique 12-digit hydrologic
        unit code identifying the sub-watershed area of the
        National Hydrography Dataset and Watershed Boundary
        Dataset.
      Attribute_Definition_Source:
        Watershed Boundary Dataset (WBD) of the Advisory
        Committee on Water Information (ACWI)
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 190201010301
          Range_Domain_Maximum: 190605021705
    Attribute:
      Attribute_Label: SED_SCORE (alias SEDIMENT_SCORE)
      Attribute_Definition: Presence U (uranium) in sediment geochemistry
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: null
          Enumerated_Domain_Value_Definition: No sediment samples were collected in this HUC
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: The highest value for U is not in the 75th percentile
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition:
            The highest value for U is in the 75th percentile, but not in the
            91st percentile
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition:
            The highest value for U is in the 91st percentile, but not in the
            98th percentile
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition: The highest value for U is in the 98th percentile
    Attribute:
      Attribute_Label: ARDF_SCORE
      Attribute_Definition: Based on tables for ARDF and ARDF placer records. (See text.)
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: No ARDF locations.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Permissible geology but no direct evidence for PGEs
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: Chromite and favorable geology
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition: PGEs reported as major or minor commodities
    Attribute:
      Attribute_Label: RCK_SCORE (alias ROCK_SCORE)
      Attribute_Definition: Presence of U in sedimentary rock geochemistry.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: There are no U measurements in the 91st percentile
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition:
            The highest value for U measures in the 91st percentile, but
            not the 98th percentile
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: The highest value for U measures in the 98th percentile
    Attribute:
      Attribute_Label: IGN_SCORE (alias IGNEOUS_SCORE)
      Attribute_Definition:
        Score for igneous rocks that have the displacement of Fe#,
        a Fe index, from an expected Fe# versus SiO2 array.  See
        publication text for more detailed description
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: Fe_# displacement < 0 AND the 65% < SiO2 < 75% is not true
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Fe_# displacement < 0 AND the 65% < SiO2 < 75%
    Attribute:
      Attribute_Label: LITH_SCORE (alias LITHOLOGY_SCORE)
      Attribute_Definition:
        Presence of certain lithologies in rock units from the
        state geologic map.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition:
            Does not have rocks conduceive for hosting sandstone U deposits
            based on the state geologic map
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition:
            Unconsolidated rock unit  that is within 3 km of a sandstone
            or similar type rock on the state map
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition:
            Sandstone or similar lithology is a component of a rock unit
            on the state map
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 3
          Enumerated_Domain_Value_Definition:
            Sandstone or similar lithology is a component of a rock unit
            on the state map and has an Tertiary or Tertiary/Cretaceous
            age
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 4
          Enumerated_Domain_Value_Definition: Arkose is a component of a geologic unit on the state map
    Attribute:
      Attribute_Label: COAL_SCORE
      Attribute_Definition:
        Presence of Upper Cretaceous or Tertiary coal as mapped
        in Alaska Division of Geological Surveys Special Report 37
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: Upper Cretaceous or Tertiary coal is not present
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Upper Cretaceous or Tertiary coal is present
    Attribute:
      Attribute_Label: AERORAD_SCORE
      Attribute_Definition: Score for U value from aerorad data set
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: U value <= 2
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: 2 < U value <= 5
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: U value > 5
    Attribute:
      Attribute_Label: TOTAL_SCORE
      Attribute_Definition:
        The sum of the individual scores (SED_SCORE, RCK_SCORE,
        IGN_SCORE, LITH_SCORE, COAL_SCORE,
        AERORAD_SCORE, and ARDF_SCORE).
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 14
    Attribute:
      Attribute_Label: SED_PCT (alias SEDIMENT_PCT)
      Attribute_Definition: The percentage of SED_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: ARDF_PCT
      Attribute_Definition: The percentage of ARDF_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: RCK_PCT (alias ROCK_PCT)
      Attribute_Definition: The percentage of RCK_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: IGN_PCT (alias IGNEOUS_PCT)
      Attribute_Definition: The percentage of IGN_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: LITH_PCT (alias LITHOLOGY_PCT)
      Attribute_Definition: The percentage of LITH_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: COAL_PCT
      Attribute_Definition: The percentage of COAL_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: AERORAD_PCT
      Attribute_Definition: The percentage of AERORAD_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: POTENTIAL
      Attribute_Definition:
        Relative description of estimated potential of sandstone U
        in this HUC based on the scoring methodology
        for the sandstone U deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: CERTAINTY
      Attribute_Definition:
        Relative description of certainty of the estimated potential
        of sandstone U in this HUC based on the scoring
        methodology for the sandstone U deposit model
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: SYMBOL
      Attribute_Definition:
        Concatenation of POTENTIAL and CERTAINTY used to
        symbolize the sandstone U scoring graphic.
      Attribute_Definition_Source: this data source
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,HIGH
          Enumerated_Domain_Value_Definition: dark red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,MED
          Enumerated_Domain_Value_Definition: medium red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,LOW
          Enumerated_Domain_Value_Definition: light red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,HIGH
          Enumerated_Domain_Value_Definition: dark yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,MED
          Enumerated_Domain_Value_Definition: medium yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,LOW
          Enumerated_Domain_Value_Definition: light yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,HIGH
          Enumerated_Domain_Value_Definition: dark green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,MED
          Enumerated_Domain_Value_Definition: medium green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,LOW
          Enumerated_Domain_Value_Definition: light green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: UNKNOWN
          Enumerated_Domain_Value_Definition: dark gray
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: SnGranite_HUCs
      Entity_Type_Definition:
        Geodatabase feature class showing mineral resource potential
        estimation for Sn-W-Mo (-Ta-In-fluorspar) deposits in specialized granites
      Entity_Type_Definition_Source: this data set
    Attribute:
      Attribute_Label: HUC12
      Attribute_Definition:
        Field HUC12 contains the unique 12-digit hydrologic
        unit code identifying the sub-watershed area of the
        National Hydrography Dataset and Watershed Boundary
        Dataset.
      Attribute_Definition_Source:
        Watershed Boundary Dataset (WBD) of the Advisory
        Committee on Water Information (ACWI)
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 190201010301
          Range_Domain_Maximum: 190605021705
    Attribute:
      Attribute_Label: SED_SCORE (alias SEDIMENT_SCORE)
      Attribute_Definition:
        Score for measures of In, Mo, Sn, Ta, and W in sediment
        geochemistry.  Two points given if the highest analysis is in
        the 98th percentile, one point if in the 91st percentile.  A
        maximum of 2 points for a single element in a HUC.  The
        points for the individual elements is additive, for a maximum
        of 10 points per HUC.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 10
    Attribute:
      Attribute_Label: ARDF_SCORE
      Attribute_Definition: Scoring for the ARDF keyword search
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: keyword search TOTAL < 4
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: 4 <= TOTAL < 20
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 2
          Enumerated_Domain_Value_Definition: keyword search TOTAL >= 20
    Attribute:
      Attribute_Label: RCK_SCORE (alias ROCK_SCORE)
      Attribute_Definition:
        Presence of In, Mo, Sn, Ta, or W in the 91st percentile
        in igneous rock geochemistry.  Points are additive.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 7
    Attribute:
      Attribute_Label: IGN_SCORE (alias IGNEOUS_SCORE)
      Attribute_Definition:
        Scores from igneous indices, for samples with SiO2 > 65%
        and either ASI (aluminum saturation index) > 1 or
        10000*Ga/Al (gallium over aluminum) > 2.6, then 1 point is given.
        Points are additive for a maximum of 2 points.
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 2
    Attribute:
      Attribute_Label: AERORAD_SCORE
      Attribute_Definition: Score for Th (thorium) value from the aerorad data set
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 0
          Enumerated_Domain_Value_Definition: Th value < 6
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: 1
          Enumerated_Domain_Value_Definition: Th value >= 6
    Attribute:
      Attribute_Label: TOTAL_SCORE
      Attribute_Definition:
        The sum of the individual scores (IGN_SCORE, RCK_SCORE,
        SED_SCORE, ARDF_SCORE, and AERORAD_SCORE).
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 14
    Attribute:
      Attribute_Label: SED_PCT (alias SEDIMENT_PCT)
      Attribute_Definition: The percentage of SED_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: ARDF_PCT
      Attribute_Definition: The percentage of ARDF_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: RCK_PCT (alias ROCK_SCORE)
      Attribute_Definition: The percentage of RCK_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: IGN_PCT (alias IGNEOUS_SCORE)
      Attribute_Definition: The percentage of IGN_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: AERORAD_PCT
      Attribute_Definition: The percentage of AERORAD_SCORE of the TOTAL_SCORE
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 100
    Attribute:
      Attribute_Label: POTENTIAL
      Attribute_Definition:
        Relative description of estimated potential of Sn-W-Mo in
        specialized granites in this HUC based on the scoring
        methodology for the Sn-W-Mo in specialized granites
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: CERTAINTY
      Attribute_Definition:
        Relative description of certainty of the estimated potential
        of Sn-W-Mo in specialized granites in this HUC based on
        the scoring methodology for the Sn-W-Mo in specialized granites
      Attribute_Definition_Source: this data set
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Relative terms of LOW, MED, and HIGH.  See this
          publication's text for complete description
    Attribute:
      Attribute_Label: SYMBOL
      Attribute_Definition:
        Concatenation of POTENTIAL and CERTAINTY used to
        symbolize the Sn-W-Mo specialized granite scoring graphic.
      Attribute_Definition_Source: this data source
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,HIGH
          Enumerated_Domain_Value_Definition: dark red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,MED
          Enumerated_Domain_Value_Definition: medium red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HIGH,LOW
          Enumerated_Domain_Value_Definition: light red color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,HIGH
          Enumerated_Domain_Value_Definition: dark yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,MED
          Enumerated_Domain_Value_Definition: medium yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: MED,LOW
          Enumerated_Domain_Value_Definition: light yellow color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,HIGH
          Enumerated_Domain_Value_Definition: dark green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,MED
          Enumerated_Domain_Value_Definition: medium green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: LOW,LOW
          Enumerated_Domain_Value_Definition: light green color
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: UNKNOWN
          Enumerated_Domain_Value_Definition: dark gray
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address:
          MS902
          Box 25286
          Denver Federal Center
        City: Lakewood
        State_or_Province: CO
        Postal_Code: 80225
        Country: U.S.A.
      Contact_Voice_Telephone: 1-888-ASK-USGS
  Resource_Description: OFR 2015-1021
  Distribution_Liability:
    This publication was prepared by an agency of the United States
    Government.  Neither the United States Government nor any
    agency thereof, nor any of their employees, makes any warranty,
    expressed or implied, or assumes any legal liability or
    responsibility for the accuracy, product, or process disclosed in
    this report, or represents that its use would not infringe privately
    owned rights.  Reference therein to any specific commercial
    product, process, or service by trade name, trademark,
    manufacturer, or otherwise does not necessarily constitute or
    imply its endorsement, recommendation, or favoring by the
    United States Government or any agency thereof.
Metadata_Reference_Information:
  Metadata_Date: 20150202
  Metadata_Review_Date: 20150202
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Nora Shew
      Contact_Address:
        Address_Type: mailing
        Address: 4210 University Drive
        City: Anchorage
        State_or_Province: AK
        Postal_Code: 99508
        Country: U.S.A.
      Contact_Voice_Telephone: 907-786-7445
      Contact_Electronic_Mail_Address: nshew@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998