Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator:  Anna Burack Wilson
        Publication_Date:  200206
        Title:  Mineral Resource Data System (MRDS) for Colorado
        Edition:  undesignated
        Geospatial_Data_Presentation_Form:  map
        Series_Information:
          Series_Name:  Open-File Report
          Issue_Identification:  OF2002-XXX
        Publication_Information:
          Publication_Place:  Lakewood, CO
          Publisher:  U.S. Geological Survey
        Other_Citation_Details:
        Online_Linkage:  http://greenwood.cr.usgs.gov/maps/ofrs.html
      Larger_Work_Citation:
          Citation_Information:
            Originator: Wilson, Anna Burack
            Originator: Heran, William D.
            Publication_Date: 200206
            Title:
              Databases and Simplified Geology for Mineralized Areas, 
              Claims, Mines and Prospects in Colorado 
            Edition: Version 1.0
            Geospatial_Data_Presentation_Form: map and text
              Series_Information:
              Series_Name: Open-File Report
              Issue_Identification: OF2002-XXX
            Online_Linkage: http://greenwood.cr.usgs.gov/maps/ofrs.html 
    Description:
      Abstract:  This dataset contains mine, prospect, and occurence 
        data for many mineral deposits in the State of Colorado.  It
        was derived and extensively updated from a previous release by
        McFaul and others, 2000.  The original and unedited dataset is
        CO_MRDS.xls.  Only fields that are commonly populated and 
        therefore may be of interest in analyzing mineral trends are 
        included in this file; for instance, comment fields are not
        included in the GIS dataset.
      Purpose: To spatially show locations and relationships between
         known mineral occurrences in Colorado.
      Supplemental_Information:  This dataset was excerpted from the 
         McFaul and others, 2000 data release for North America.  The 
         data were intially compiled by or for the USGS over a span of 
         many years.  Few updates have been made to the Colorado data
         in about 20 years.  Most of those updates have been for 
         localities in, or adjacent to, National Forests.
    Time_Period_of_Content:
      Time_Period_Information:
        Single_Date/Time:
          Calendar_Date:  2002
      Currentness_Reference:  Prior to release of McFaul and others, 
        2000
    Status:
      Progress:  complete
      Maintenance_and_Update_Frequency:  sporadic
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -109.1
        East_Bounding_Coordinate: -102.0
        North_Bounding_Coordinate: 41.1
        South_Bounding_Coordinate: 36.9
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: none
        Theme_Keyword: MRDS
        Theme_Keyword: Mineral resource
        Theme_Keyword: mine
        Theme_Keyword: prospect
        Theme_Keyword: mineral occurrence
      Place:
        Place_Keyword_Thesaurus: none
        Place_Keyword: Colorado
        Place_Keyword: CO
    Access_Constraints: None
    Use_Constraints:  
      The U.S. Geological Survey (USGS) makes no warranties related to 
      the accuracy of the data and users are required to determine 
      suitability of use for any particular purpose.  This digital map
      is not to be construed as a legal representation of any locality, 
      nor is the data within any field considered reliable.  In most
      cases, the data should not be used at scales larger than 
      1:500,000, although many localities are accurately located 
      certainly at 1:24,000 scale.  
      Any hardcopies utilizing this data set shall clearly indicate 
      this source.  If the user has modified the data in any way, (s)he 
      is obligated to describe the types of modifications performed on 
      the hardcopy map.  User specifically agrees not to misrepresent
      this dataset, nor imply that changes were approved by the USGS.
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person:  Anna Burack Wilson
          Contact_Organization:  U.S. Geological Survey (USGS)
          Contact_Position:  Geologist
          Contact_Address:  
            Address_Type: mailing address
            Address: Box 25046, MS 905
            City: Denver
            State_or_Province:  Colorado
            Postal_Code:  80225-0046
            Country:  USA
          Contact_Voice_Telephone: 303-236-1800 or 303-236-5593
          Contact_Facsimile_Telephone: 303-236-3200
          Contact_Electronic_Mail_Address: awilson@usgs.gov
    Data_Set_Credit:  U.S. Geological Survey
    Native_Data_Set_Environment:
      CO_MRDS.tab:  Win2000, MapInfo Professional 6.5
      CO_MRDS.shp: Win2000, ArcView 3.2
  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report:  There are known problems with 
        accuracy. In hundreds of cases, the mine may belong in a
        different county, quadrangle, or even state, from where its
        latitude and longitude locate it. In general, the data are
        accurate at 1:500,000, though in many cases locations are 
        accurate at 1:24,000.  The accuracy can not be determined from
        this database.
    Completeness_Report:  Only mines and prospects that have been
      gleaned from the literature and former databases are included. 
      In many cases, the data have not been revised in many years.  
      Most mineral localities discovered or documented in the last 20
      or so years are completely missing.
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report:  unknown
    Lineage:
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator:  McFaul, E.J, Mason, G.T., Ferguson, W.B, and 
              Lipin, B.R.
            Publication_Date:  2000
            Title:  U.S. Geological Survey Mineral Databases--MRDS and
              MAS/MILS
            Edition:  undesignated
            Geospatial_Data_Presentation_Form:  LandView CD
            Series_Information:
              Series_Name:  USGS Digital Data Series
              Issue_Identification:  DDS-52
            Publication_Information:
              Publication_Place:  Reston, Virginia
              Publisher:  U.S. Geological Survey
        Type_of_Source_Media:  digital files on CD-ROM
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Single_Date/Time:
              Calendar_Date:  2000
          Source_Currentness_Reference:  Publication date
        Source_Citation_Abbreviation:  McFaul and others, 2000
        Source_Contribution:  Numerous errors and inaccuracies in the
          McFaul and others, 2000 data release and the need to be able 
          to plot the appropriate datafields in commonly used GIS 
          programs (i.e. ArcView, MapInfo, Arcinfo)led to reformatting
          the data for such uses.  Queries of the data against other 
          spatial data layers confirmed many of the numerous errors  
          and pointed out others.  Comparison with other local datasets
          (i.e. Wilson and LaRock, 1992, for Summit County and Wilson 
          and others, 2001, for Gunnison, Uncompahgre, and Grand Mesa
          National Forests) pointed out several hundred more problems.
          Each of the records in the McFaul and others dataset has been
          retained or, if deleted (either because it is unverifiable or
          duplicates another record)it has been given to those who 
          maintain the master MRDS database, if it is ever updated.
      Process_Step:
        Process_Description:  5470 MRDS records for Colorado were 
          extracted from the master MRDS database (2001) by selecting 
          on the State field.  From this, only 50 fields were selected
          to limit the total record length to roughly 4000 characters, 
          a size that most desktop GIS programs can accomodate.  The 
          complete dataset is included with this release as 
          CO_MRDS.xls.
        Process_Date:  2002
        Process_Contact:
          Contact_Information:
            Contact_Person_Primary:  Anna Burack Wilson, USGS
            Contact_Position:  Geologist
            Contact_Address:
              Address_Type: mailing
              Address:  Box 25046, MS 905
              City:  Lakewood
              State_or_Province:  CO
              Postal_Code:  80439
            Contact_Voice_Telephone:
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method:  Vector
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Geographic:
        Geographic_Coordinate_Units:  decimal degrees
          (latitude/longitude)
  Entity_and_Attribute_Information:
    Detailed_Description:
      Attribute:
        Attribute_Label: REC_NO
        Attribute_Definition:  7 character MRDS code
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  Record Number: A unique 7 character 
          code alpha-numeric code assigned by USGS
      Attribute:
        Attribute_Label: USBM_NO
        Attribute_Definition:  8 character MAS/MILS code
        Attribute_Definition_Source:  USBM/USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  USBM number:  last 8 digits of code
            assigned by USBM, by county.  Included only if known to 
            correspond to MRDS record.
      Attribute:
        Attribute_Label: FIL_LINK
        Attribute_Definition:  140 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  File Link Identification.
          Codes present include:
          CONSV (Conservation Division, USGS (no longer exists)), 
          MMF (Major Mines File record), 
          PMR (Preliminary MRDS record, other than a major mines 
            record), 
          RRO (Regional Resource Officer, Department of State), 
          OME (Office of Mineral Exploration, with record number), 
          DMA (Defense Mapping Agency, with record number), 
          DMEA (Defense Mineral Exploration Agency (no longer exists)), 
          ISMI (International Strategic Minerals Inventory record 
            (with record number)), 
          IMS (Industrial Minerals Survey), 
          Z (unknown?)
      Attribute:
        Attribute_Label: REC_TYPE
        Attribute_Definition:  1 character MRDS code
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  Record Type
          S=SITE RECORD
          D=DISTRICT RECORD
          R=REGIONAL RECORD
      Attribute:
        Attribute_Label: REC_TYPE_CALC
        Attribute_Definition:  8 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  Record Type, calculated from 
          REC_TYPE, in previous field:
          SITE, DISTRICT, OR REGIONAL RECORD
      Attribute:
        Attribute_Label: SITE
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  Primary name of the site, normally
          the most recent name applied to the site.
      Attribute:
        Attribute_Label: SYNONYM
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  synonym for primary site name, 
          if known.  May include related, adjacent, or contiguous
          mines or properties.  May include claim names in parentheses,
          if known.
      Attribute:
        Attribute_Label: LAND_STATU
        Attribute_Definition:  5 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  2 character codes as follows:
            01 = PRIVATE
            20 = COUNTY
            30 = STATE (UNDIFFERENTIATED)
            32 = STATE PARK AREA
            40 = FEDERAL (UNDIFFERENTIATED)
            41 = U.S. FOREST SERVICE
            45 = NATIONAL PARK SERVICE
            47 = ? (not listed in 1995 MRDS manual)
            49 = BUREAU OF LAND MANAGEMENT
            50 = DEPARTMENT OF DEFENSE
      Attribute:
        Attribute_Label: LAT_DMS
        Attribute_Definition:  9 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  Latitude in degrees-minutes-seconds,
            as in the original database.  This value has not been
            corrected in most cases.  Probably should be deleted from
            the database.  Provided only as a general guide to see
            what the original, and in many cases inaccurate, location
            was thought to be.  In cases of mistaken identity, this
            could be closer to the correct locality than where the 
            site is now plotted.
      Attribute:
        Attribute_Label: LONG_DMS
        Attribute_Definition:  10 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  Longitude in degrees-minutes-
            seconds, with same caveats as LAT_DMS, above.
      Attribute:
        Attribute_Label: PRIMARY_CO
        Attribute_Definition:  4 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  normally, one or two letter standard
            elemental abbreviation from periodic table.  In addition:
            FLD = feldspar
            BRI = brines-salines
            COA = coal
            CO2 = carbon dioxide
            CLY5 = clay, fire (refractory)
            CLY3 = kaolin
            CLY = clay, general
            EVA = evaporites
            GAR = garnet
            GEM = gemstones
            GRF = graphite
            GRT = granite
            GYP = gypsum, anhydrite
            LST = limestone
            MBL = marble
            MIC = mica 
            MIC1 = mica, sheet
            MIC2 = mica, scrap
            MON = monazite
            PEA = peat
            PER = perlite
            PUM = pumice
            PYR = pyrite
            QTZ = quartz
            REE = rare earth elements
            SAO = oil sands
            SDG = sand and gravel
            SIL = silica
            SLA = slate
            SST = sandstone
            STN = stone
            STN1 = stone, crushed/broken
            STN2 = stone, dimension
            VOL = volcanic materials
            VRM = vermiculite
            ZEO = zeolites
      Attribute:
        Attribute_Label: MAJOR_COMM
        Attribute_Definition:  37 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: major commodities, for codes see
            PRIMARY_CO, above
      Attribute:
        Attribute_Label: MINOR_COMM
        Attribute_Definition:  22 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: minor commodities, for codes see
            PRIMARY_CO, above
      Attribute:
        Attribute_Label: TRACE_COMM
        Attribute_Definition:  47 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: trace commodities, for codes see
            PRIMARY_CO, above
       Attribute:
       Attribute_Label: COMMOD
        Attribute_Definition:  62 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: all commodities, listing Major, 
            minor, and trace; for codes see PRIMARY_CO, above
       Attribute:
       Attribute_Label: TOWNSHIP
        Attribute_Definition:  29 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Ignore the "1:", a remnant of the
            original file system.  Normally in 3 digit township number,
            followed by N (north) or S (south) of baseline.  Multiple
            townships may be listed.  Superseded by TOWN column near
            end of file.
        Attribute:
      Attribute_Label: RANGE
        Attribute_Definition:  29 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Ignore the "1:", a remnant of the
            original file system.  Normally in 3 digit range number,
            followed by W (west) or E (east) of meridian.  Multiple
            ranges may be listed.  Superseded by RNG column near end
            of file.
       Attribute:
       Attribute_Label: SECTION
        Attribute_Definition:  133 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Ignore the "1:", a remnant of the
            original file system.  2 digit section numbers. Multiple
            sections may be listed.  
       Attribute:
       Attribute_Label: SECT_FRACT
        Attribute_Definition:  167 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: SECTION FRACTION: Ignore the "1:", a
            remnant of the original file system.  This column has not
            been revised or otherwise edited in any way.
       Attribute:
       Attribute_Label: MERIDIAN
        Attribute_Definition:  20 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: 	Most of Colorado is in the SIXTH
          PRINCIPAL MERIDIAN.  APPROXIMATELY the southwestern quarter
          of the state is in the NEW MEXICO MERIDIAN.  A small area
          nearly centered along the western border of the state is the
          UTE MERIDIAN.  Several land grant tracts are UNSURVEYED and
          not assigned to a meridian.  
          (see http://water.state.co.us/pilot/tutorial2.htm)
       Attribute:
       Attribute_Label: POSITION
        Attribute_Definition:  168 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Position from nearest prominent 
          locality.  Includes "the direction and aerial point-to-point 
          distance of the location from some nearby town or prominent 
          geographic feature" (USGS, MRDS manual, 1995).
       Attribute:
       Attribute_Label: DISTRICT
        Attribute_Definition:  81 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Most recent name of the Mining
            district, subdistrict, or area.  Because the districts are
            not well defined geographically in Colorado, this field is 
            not reliable.  Few records have been checked.
       Attribute:
       Attribute_Label: COUNTY
        Attribute_Definition:  39 characters
        Attribute_Definition_Source:  USGS and by GIS query
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Most mine and claim data in the state 
            is filed with the county in which it is located.  Mines 
            that are recorded as being in one county, but that plot in
            a different one, are specifically coded in the database to
            point out the conflicting information.  With those 
            exceptions, County may be among the most accurate fields in 
            the database.
       Attribute:
       Attribute_Label: QUAD24
        Attribute_Definition:  48 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: The quadrangle listed in the original 
          MRDS database, if one (or more) was specified.  Frequently 
          erroneous.  Where MRDS database omited quadrangle, the field 
          is filled by querying the "CO_24K" map layer and substituting
          the "Quad_name" field.
       Attribute:
       Attribute_Label: QUAD100
        Attribute_Definition:  17 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: The 1:100,000 scale quadrangle that 
          contains the current location of the mineral site.  The field
          was filled by querying the "CO_100K" map layer and 
          substituting the "Description" field.  
       Attribute:
       Attribute_Label: QUAD250
        Attribute_Definition:  35 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain:  The 1:250,000 scale quadrangle that 
          contains the 100K quadrangle.  Values with dates in 
          parentheses are from the original database.  All other values
          are from querying the QUAD100K field and running "UPDATE 
          COLUMN" in MapInfo to replace the value with the correct 
          quadrangle names.
       Attribute:
       Attribute_Label: QUAD6250
        Attribute_Definition:  24 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: The 1:62,500 scale quadrangle, if 
          designated.
       Attribute:
       Attribute_Label: QUAD_OTHER
        Attribute_Definition:  47 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Any other quadrangle map listed in 
          the original database.  This field is relatively unpopulated.
       Attribute:
       Attribute_Label: Q_OTHER_SCL
        Attribute_Definition:  16 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Map scale for "QUAD_OTHER".  Few 
          records have entries.
       Attribute:
       Attribute_Label: PROD_CALC
        Attribute_Definition:  6 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Production (calculated from PROD,
            below).  SMALL, MEDIUM, LARGE, YES, NO
       Attribute:
       Attribute_Label: PROD_YEARS
        Attribute_Definition:  35 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Production years
       Attribute:
       Attribute_Label: PROD
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Production (see PROD_CALC, above)
       Attribute:
       Attribute_Label: REFERNCES
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Arguably, the most important and 
            useful field in the entire database.  (Ignore "1:" and 
            "2:").  Quality of citations varies widely.  Format is 
            inconsistent.  Some references have incomplete information 
            and therefore probably can not be located.  For complete 
            citations in much of southwestern Colorado, see the 
            bibliography in Wilson and others (2001).
       Attribute:
       Attribute_Label: WORK_TYPE
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Working type:  S = surface, 
            U = underground, B = both
       Attribute:
       Attribute_Label: WORK_TYPE_
        Attribute_Definition:  23 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Working type (surface, underground,
            or both) calculated from WORK_TYPE, above.
       Attribute:
       Attribute_Label: COMM_TYPE
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Commodity type: N = nonmetallic, 
            M = metallic
       Attribute:
       Attribute_Label: COMM_TYPE
        Attribute_Definition:  25 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Commodity type calculated from 
            COMM_TYPE, above.  Metallic or Nonmetallic.
       Attribute:
       Attribute_Label: DEP_DESC_C
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Deposit description
       Attribute:
       Attribute_Label: DEP_SIZE
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Deposit size refers to the amount of
            metal or mineral contained in the deposit (total of 
            production PLUS any reserves): L=large, M=medium, 
            S=small.  Criteria for designation vary for each different
            commodity, and are assigned based on the scheme devised for 
            the metallogenic map of North America by Guild (1968) 
           (USGS MRDS manual, 1995, p. 18 and p. A75-76).
       Attribute:
       Attribute_Label: DEP_SIZE_C
        Attribute_Definition:  6 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Deposit size, calculated from
            DEP_SIZE:  small, medium, large.
       Attribute:
       Attribute_Label: DEP_TYPE
        Attribute_Definition:  138 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Ignore the "1:" or "2:".  May follow
            a general list of deposit types in the USGS MRDS manual 
            (1995, p. A71-72), but in most cases does not.  Useful as a 
            general information about a specific record, but not for 
            querying due to inconsistent wording.
       Attribute:
       Attribute_Label: DESC_WORK
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Description of workings
       Attribute:
       Attribute_Label: DEV_STATUS
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Development Status:
            1 = OCCURRENCE                  INACTIVE
            2 = PROSPECT                    INACTIVE
            3 = PROSPECT                    ACTIVE
            4 = LITTLE DEVELOPED PRODUCER   INACTIVE
            5 = LITTLE DEVELOPED PRODUCER   ACTIVE
            6 = DEVELOPED PRODUCER          INACTIVE
            7 = DEVELOPED PRODUCER          ACTIVE
            8 = INTERMITTENT PRODUCER       ACTIVE
       Attribute:
       Attribute_Label: DEV_STATUS2
        Attribute_Definition:  36 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Development status, explained in 
            DEV_STATUS, above.  Occurrence is the default if no 
            information about the site is available.  This field has 
            not been edited.
       Attribute:
       Attribute_Label: DISC
        Attribute_Definition:  148 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Discoverer.  
          This field has not been edited.
       Attribute:
       Attribute_Label: MODEL
        Attribute_Definition:  41 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: USGS model name for the type of 
            deposit.  Ignore "1:" or "2:". Generally follows the 
            guidelines of USGS MRDS manual, 1995, p. 19, p. A78-82.
       Attribute:
       Attribute_Label: MODEL_NUM
        Attribute_Definition:  11 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: USGS model number, corresponding to
          MODEL, above.  Subject to interpretation, and not edited for 
          this data release.  Ignore "1:" or "2:".
       Attribute:
       Attribute_Label: ORE_FORM
        Attribute_Definition:  127 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Ore form and shape.  This field has 
            not been edited.  Ignore "1:" and "2:".   Choices from USGS
            MRDS manual (1995, p. 20, p. A73) include: blanket,
            tabular, wedge, lens, pod, pinch and swell, linear, 
            irregular, pipe, other. 
       Attribute:
       Attribute_Label: ORE_MAT
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Ore materials:  all ore materials at
            a given site in decreasing order of importance (not 
            necessarily abundance).  Include any material of economic
            interest.  Each item in COMMOD should be included here.
       Attribute:
       Attribute_Label: LOCATION
        Attribute_Definition:  240 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Comments pertaining to where the 
           deposit is located and how the location was determined.
       Attribute:
       Attribute_Label: LAT
        Attribute_Definition:  float 
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: LATITUDE in decimal degrees
       Attribute:
       Attribute_Label: LONG
        Attribute_Definition:  float
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: LONGITUDE in decimal degrees.
       Attribute:
       Attribute_Label: TOWN
        Attribute_Definition:  5 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Township number, north or south of 
            baseline.
       Attribute:
       Attribute_Label: RNG
        Attribute_Definition:  4 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: Range number, east or west of 
            meridian.
       Attribute:
       Attribute_Label: T1
        Attribute_Definition:  2 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: township number
       Attribute:
       Attribute_Label: T2
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: township N or S of baseline
       Attribute:
       Attribute_Label: R1
        Attribute_Definition:  3 characters
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: range number
       Attribute:
       Attribute_Label: R2
        Attribute_Definition:  1 character
        Attribute_Definition_Source:  USGS
        Attribute_Domain_Values:  
          Unrepresentable_Domain: range E or W of meridian
    Overview_Description:
      Entity_and_Attribute_Overview:  Most of the above fields were
        directly imported from an as yet unreleased revision to the
        master MRDS database released by McFaul and others, 2000. 
        Dozens of fields for hundreds of records were revised for the 
        CO_MRDS file in this report although the original data are in
        the .xls database included in this report.  Prefixes of "1:" or
        "2:" should be ignored.  Frequently used columns that contained 
        those prefixes have been reformated to exclude them.  LAT_DMS 
        and LONG_DMS are not accurate. The grossest errors have been 
        changed to make the locality reasonable but not accurate.
        Likewise, the TOWNSHIP and RANGE have been superseded by TOWN
        and RNG.  The former are retained to use to cross-check vague 
        or inaccurate localities.  TOWNSHIP and RANGE may include 
        multiple entries:  TOWN and RNG are only the township and range 
        where the site is currently plotted.  QUAD24, QUAD100, and 
        QUAD250 have all been extensively revised.  Entries with a date 
        in parentheses were retained from the original database.  
        USBM_NO was filled in if the lead author could reasonably
        ascertain that a record in the CO_MAS file directly 
        corresponded to a CO_MRDS record.  It is not always the same 
        record number as the record in FIL_LINK.  
      Entity_and_Attribute_Detail_Citation:  Anna B. Wilson
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization:  
          U.S.G.S. Information Services
          (Open-File Report Sales)
        Contact_Address:
          Address_Type:  mailing and physical address
          Address:  Box 25286, Building 810, Denver Federal Center
          City:  Denver
          State_or_Province:  CO
          Postal_Code:  80225
          Country:  USA
      Contact_Voice_Telephone: 303-202-4700
      Contact_Facsimile_Telephone: 303-202-4188
      Contact_Electronic_Mail_Address: infoservices@usgs.gov
        Hours_of_Service:  8:00 a.m. - 4:30 p.m. Central time zone
   Resource_Description:  Open-File Report 2002-XXXX 
    Distribution_Liability:  
      The U.S. Geological Survey (USGS) provides the data "as is." 
      The USGS makes no guarantee or warranty concerning the accuracy
      of information contained in the geographic data.  The USGS 
      further makes no warranties, either expressed or implied as to 
      any other matter whatsoever, including, without limitation, the 
      condition of the product, or its fitness for any particular
      purpose.  The burden for determining fitness for use lies 
      entirely with the user.  Although these data have been processed 
      successfully on computers at the USGS, no warranty, expressed or 
      implied, is made by the USGS regarding the use of these data on
      any other system, nor does the fact of distribution constitute or 
      imply any such warranty.  In no event shall the USGS have any 
      liability whatsoever for payment of any consequential,
      incidental, indirect, special, or tort damages of any kind, 
      including, but not limited to, any loss of arising out of use of 
      or reliance on the geographic data or arising out of the
      delivery, installation, operation, or support by the USGS.
  Technical_Prerequisites:
    The user should have GIS software capable of reading ArcView shape 
    (.shp), or MapInfo table (.tab) files.  In the event the user does 
    not have such software, ESRI's ArcExplorer is provided as a 
    rudimentary tool for viewing and querying the data.
  Metadata_Reference_Information:
    Metadata_Date:
    Metadata_Review_Date:  200205
    Metadata_Future_Review_Date:  200205
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person:  Anna B. Wilson
          Contact_Organization:  U.S. Geological Survey
        Contact_Position:  Geologist
        Contact_Address:
          Address_Type:  mailing
          Address:  Box 25046, MS 905, Denver Federal Center
          City:  Denver
          State_or_Province:  CO
          Postal_Code:  80225-0046
          Country:  USA
        Contact_Voice_Telephone: (303) 236-5593
        Contact_Facsimile_Telephone: (303) 236-3200
        Contact_Electronic_Mail_Address: awilson@usgs.gov
        Contact_Instructions:  main phone is 303-236-1800
    Metadata_Standard_Name: FGDC Content Standards for
      Digital Geospatial Metadata
    Metadata_Standard_Version:  FGDC-STD-001-1998
    Metadata_Time_Convention:  local time
    Metadata_Access_Constraints: none
    Metadata_Use_Constraints: none