Identification_Information: 
    Citation: 
      Citation_Information: 
        Originator: Dr. Greta J. Orris
        Originator: Carlotta B. Chernoff 
        Publication_Date: 2002 
        Title: 
          Dataset of World Phosphate Mines, Deposits, and Occurrences 
          Part A. Geologic Data
          Part B. Location and Mineral Economic Data
        Edition: First 
        Geospatial_Data_Presentation_Form: 
          Microsoft Excel 98 spreadsheet 
        Series_Information: 
          Series_Name: USGS Open-File Report 
          Issue_Identification: 02-156A, B 
        Publication_Information: 
          Publication_Place: Menlo Park, CA 
          Publisher: U.S. Geological Survey 
    Description: 
      Abstract: 
        This dataset contains latitudes, longitudes, commodity, and 
        mineral economic data for world phosphate mines, deposits, 
        and occurrences. A second table contains the accompanying 
        geologic data. The data in this compilation were derived from 
        over 100 different published and non-published sources. This 
        dataset includes 2 tables: a table of the data collected for 
        USGS Open-File Report OF02-156B, which contains location data,
        and a table of the data for companion report USGS Open-File 
        Report OF02-156A, which contains geologic data for the same 
        sites. 
      Purpose:
        This dataset was compiled from several smaller datasets 
        previously compiled by Carlotta Chernoff of the University 
        of Arizona and Greta Orris of the USGS and from new data. 
        The more complete dataset was needed to better classify 
        phosphate deposits and evaluate their distribution and 
        occurrence. 
      Supplemental_Information: 
        This dataset consists of two Excel 98 spreadsheet files, 
        OF02156A.xls and OF02156B.xls. OF02156B.xls contains 
        latitudes, longitudes, commodity, reference, and mineral 
        economic data for the phosphate mines, deposits, and 
        occurrences in the database. The second spreadsheet includes 
        the companion geologic data from OF02-156A, including host 
        rock, age, mineralogy, and other information 
    Time_Period_of_Content: 
      Currentness_Reference: 
        The currentness of the data varies from site to site 
        depending on the recentness of the source materials. 
      Time_Period_Information: 
        Single_Date/Time: 
          Calendar_Date: 2002 
    Status:
      Progress: Complete  
      Maintenance_and_Update_Frequency: No updates are planned. 
    Spatial_Domain: 
      Bounding_Coordinates: 
        West_Bounding_Coordinate: -178.81667
        East_Bounding_Coordinate: 177.3
        North_Bounding_Coordinate: 69.45
        South_Bounding_Coordinate: -50.3333
    Keywords: 
      Theme: 
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: phosphate
        Theme_Keyword: carbonatite 
        Theme_Keyword: phosphorite 
        Theme_Keyword: guano 
        Theme_Keyword: phosphate rock
      Place:
        Place_Keyword_Thesaurus: None
        Place_Keyword: world
    Access_Constraints: None. 
    Use_Constraints: 
      This digital database is not meant to be used or displayed at 
      any scale larger than 1:1,000,000.
    Point_of_Contact: 
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person:  Dr. Greta J. Orris
          Contact_Organization: U.S. Geological Survey 
        Contact_Address:
          Address_Type: Mailing
          Address: 520 N. Park Ave.; Suite 355
          City: Tucson
          State_or_Province: AZ
          Postal_Code: 85719
          Country: USA  
        Contact_Voice_Telephone: (520) 670-5583 
        Contact_Electronic_Mail_Address: greta@usgs.gov  
    Native_Data_Set_Environment: 
      MS Excel 98 or later 
    Data_Set_Credit: 
      G.J. Orris and C.B. Chernoff compiled the data on world 
      phosphate deposits from previously published compilations, 
      new published sources, "gray" literature, company internet 
      sites, and other sources. Locations were commonly taken from 
      published sources, no effort was made to determine the 
      correctness of these data beyond a preliminary review to be 
      sure they plot in the correct country. Other locations were 
      found using the GEOnet Names server on the National Imagery 
      and Mapping Agency's website, www.nima.mil.  Still other 
      locations were determined using available maps of varying 
      scales. Most of the latitudes-longitudes are believed to be 
      within 5 minutes of their true locations, but other locations 
      may be highly inaccurate due to inadequate or incorrect 
      location data.  
  Data_Quality_Information: 
    Attribute_Accuracy: 
      Attribute_Accuracy_Report: 
        The accuracy of file data attributes is highly variable, 
        especially for some parts of Africa and Asia. Most locations 
        are believed to be within 5 minutes of the exact location; 
        some locations are for the nearest town, and other locations 
        may be highly inaccurate. Location errors are a result of 
        inadequate or incorrect original data, error caused by 
        multiple locations with the same name, and error introduced 
        by data entry or location format conversion. Data were plotted
        at a preliminary stage to check that sites plotted in the 
        correct country and the data tables were spot-checked (1 in 
        5 records) against the original data. 
    Logical_Consistency_Report: 
      Point data is given in latitude/longitude decimal degrees.
    Completeness_Report: This report is the most complete compilation 
      of phosphate mines, deposits, and occurrences known.  However, 
      it is highly likely that there are additional phosphate sites 
      that are not included.  In addition, data for many of
      the sites are incomplete.  Determination of latitudes and 
      longitudes for some sites were impossible given the available data.
    Positional_Accuracy: 
      Horizontal_Positional_Accuracy: 
        Horizontal_Positional_Accuracy_Report: 
          The horizontal positional accuracy of the digital data was 
          checked to be sure that they plotted within the correct 
          country. The latitudes and longitudes were largely 
          determined using latitude-longitudes given in one of the 
          references or determined from descriptions of the 
          location using the maps available to us or the GEOnet 
          Names server on the National Imagery and Mapping Agency's 
          NIMA database. The accuracy of these locations vary with 
          the detail of the original information. 
    Lineage:
      Process_Step: 
        Process_Description: 
          Data were separated into various fields (categories) within 
          the Excel spreadsheets. 
        Process_Date: 2001 

  Entity_and_Attribute_Information: 
    Overview_Description: 
      Entity_and_Attribute_Overview: 
        The following attributes exist in the OF02156B spreadsheet of 
        the data. 
        1. Deposit No. - a number assigned to each deposit by the authors.
        This number is the same for each deposit in both OF02156A and
        OF02156B.
        2. Country/Ocean - country 
        3. State/ Principal Administrative Area- state, province, 
        other 2nd order political subdivision 
        4. 3rd order political. - county (US), other 3rd order 
        political subdivision 
        5. Basin/Fmt/Region (area)/Deposit - basin, formation, 
        regional, or deposit name/designation 
        6. Deposit or Site_Name - site or deposit name 
        7. Commods - commodities, abbreviations listed in Open-File 
        text 
        8. Analytical Data 
        9. Latitude - decimal degrees 
        10. Longitude - decimal degrees 
        11. Location Comments 
        12. Year of discovery - year deposit was discovered 
        13. Prod? - has site produced now or in the past 
        14. Annual production - annual production or production 
        capacity 
        15. Cumulative production 
        16. Mining method - surface or underground 
        17. Resources - resource and reserve data 
        18. Company - owners/operators 
        19. General Comments 
        20. Location references - reference(s) for location 
        information 
        21. General References - references for geologic and mineral 
        economic data 
        22. MASMILS Ref No.- Number of corresponding record in the 
        USGS' MASMILS database. 
        23. MRDS Ref No.- Number of corresponding record in the USGS' 
        Mineral Resources Data System  
        
        The following attributes exist in the OF02156A spreadsheet of 
        the data. 
        1. Deposit No. - a number assigned to each deposit by the authors
        This number is the same for each deposit in both OF02156A and
        OF02156B.
        2. Country/Ocean - country 
        3. State/ Principal Administrative Area- state, province, 
        other 2nd order political subdivision 
        4. 3rd order political. - county (US), other 3rd order 
        political subdivision 
        5. Basin/Fmt/Region (area)/Deposit - basin, formation, 
        regional, or deposit name/designation 
        6. Deposit or Site_Name - site or deposit name 
        7. Deposit Type - concise geologic description of deposit type 
        8. Type of phosphorite - form or style of mineralization 
        9. General Age Mineralization - Eon, era,and (or) period(s) 
        10. Specific Age Mineralization - Period(s), epoch(s), series, and
        or radiometric age 
        11. Magmatic/host rock age - age of associated magmatism or host 
        rocks
        12. Host/Associated Lithology 
        13. Host Formation or Complex - formal unit names
        14. Minerals - major minerals present
        15. Geologic Comments or Deposit Description - additional geologic
        or deposit data 
        16. Age References - reference(s) for deposit age(s)
        17. General Comments - additional comments  
        18. General References - references used to compile date in table 

      Entity_and_Attribute_Detail_Citation: 
        The details of attributes included in this dataset were 
        compiled by G.J. Orris of the USGS and Carlotta B. Chernoff 
        of the Geosciences Department, University of Arizona. 
  Distribution_Information: 
    Distributor: 
      Contact_Information: 
        Contact_Organization_Primary: 
          Contact_Organization: 
            USGS Information Services Open-File Report Sales 
        Contact_Address: 
          Address_Type: Mailing 
          Address: Box 25286 
          City: Denver 
          State_or_Province: CO 
          Postal_Code: 80225 
        Contact_Voice_Telephone: (303)202-4700 
        Contact_Facsimile_Telephone: (303)202-4188 
        Contact_Instructions: 
          Call about URL address and downloading procedures. 
    Distribution_Liability: 
      The U.S. Geological Survey (USGS) provides these geographic 
      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 profits arising out of use of or reliance on the 
      geographic data or arising out of the delivery, installation, 
      operation, or support by USGS.
    Standard_Order_Process:
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name:  Excel Workbook
          Format_Information_Content:
            Latitudes, longitudes, commodity information, mineral
            economic data, and geologic data for phosphate mines, 
            deposits, and occurrences of the world. 
          Transfer_Size: 0.5 Mb (A), 0.524 Mb (B)
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name:  
                  <URL: http://geopubs.wr.usgs.gov/open-file/of02-156A>
                  <URL: http://geopubs.wr.usgs.gov/open-file/of02-156B>
      Fees: None 
  Metadata_Reference_Information: 
    Metadata_Date: 06072002 
    Metadata_Contact: 
      Contact_Information: 
        Contact_Person_Primary: 
          Contact_Person: Dr. Greta J. Orris 
          Contact_Organization: U.S. Geological Survey 
        Contact_Address:
          Address_Type: Mailing
          Address: 520 N. Park Ave.; Suite 355
          City: Tucson
          State_or_Province: AZ
          Postal_Code: 85719
          Country: USA  
        Contact_Voice_Telephone: (520) 670-5583 
        Contact_Electronic_Mail_Address: greta@usgs.gov 
    Metadata_Standard_Name: 
      Content Standard for Digital Geospatial Metadata 
    Metadata_Standard_Version: FGDC-STD-001-1998