Identification_Information:
  Citation:
    Citation_Information:
      Originator: Slowey, Aaron J.
      Originator: Rytuba, James J.
      Title: Mercury release from the Rathburn Mine, Petray Mine, and Bear Valley saline springs, Colusa County, California 2004-2006
      Publication_Date: 2008
      Series_Information:
        Series_Name: Open-File Report
        Issue_Identification: 2008-1179
      Publication_Information:
        Publication_Place: Menlo Park, California
        Publisher: Geological Survey (U.S.)
      Online_Linkage: http://pubs.usgs.gov/of/2008/1179/
  Description:
    Abstract:
      Summary of data obtained from field sampling of mine tailings and
      waste rock and water and sediment in regional springs and
      tributaries that drain from the mine area into Bear Creek. 
      Ground-water springs are also potential sources of mercury here.
    Purpose:
      Results permit a preliminary assessment of mining and natural
      sources of Hg and associated chemical constituents that could
      elevate levels of monomethyl Hg in Bear Creek.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 20010717
        Ending_Date: 20061214
    Currentness_Reference: Ground condition.  Sampling was conducted during this time interval.
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -122.48
      East_Bounding_Coordinate: -122.43822
      North_Bounding_Coordinate: 39.12
      South_Bounding_Coordinate: 38.0869
  Access_Constraints: none
  Use_Constraints: none
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: Alexandria Digital Library Feature Type Thesaurus
      Theme_Keyword: mine sites
    Place:
      Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
      Place_Keyword: f06011 = Colusa
    Theme:
      Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data
      Theme_Keyword: DBF
      Theme_Keyword: shapefile
    Theme:
      Theme_Keyword_Thesaurus: Mineral Resources Data System commodity types
      Theme_Keyword: Mercury
    Theme:
      Theme_Keyword_Thesaurus: USGS Thesaurus
      Theme_Keyword: abandoned mines and quarries
      Theme_Keyword: atomic absorption analysis
      Theme_Keyword: atomic emission spectroscopy
      Theme_Keyword: chromatography
      Theme_Keyword: geochemistry
      Theme_Keyword: geospatial datasets
      Theme_Keyword: mass spectroscopy
      Theme_Keyword: mercury
      Theme_Keyword: mercury contamination
      Theme_Keyword: mine drainage
      Theme_Keyword: surface water quality
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Aaron J Slowey
        Contact_Organization: USGS WR SW GD
      Contact_Position: Contractor
      Contact_Address:
        Address_Type: mailing address
        Address:
          Bldg 15, McKelvey Building
          345 Middlefield Road
        City: Menlo Park
        State_or_Province: CA
        Postal_Code: 94025-3561
        Country: USA
      Contact_Voice_Telephone: 650-329-5474
      Contact_Facsimile_Telephone: 650-329-5491
      Contact_Electronic_Mail_Address: aslowey@usgs.gov
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Point
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Entity point
      Point_and_Vector_Object_Count: 20
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Geographic_Coordinate_Units: decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.4
      Denominator_of_Flattening_Ratio: 294.98
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table1.dbf
      Entity_Type_Definition: Altered serpentinite, calcine and sediment sample locations at open pits at the Rathburn and Petray Mines, table 1 of the report
    Attribute:
      Attribute_Label: LOCATION
      Attribute_Definition: Site location number plotted on figure 2 of the report
    Attribute:
      Attribute_Label: LOC_DESC
      Attribute_Definition: General geographic area
    Attribute:
      Attribute_Label: LATITUDE
      Attribute_Definition: Geographic latitude in decimal degrees
    Attribute:
      Attribute_Label: LONGITUDE
      Attribute_Definition: Geographic longitude in decimal degrees
    Attribute:
      Attribute_Label: DESC
      Attribute_Definition: Description of material sampled
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table2.dbf
      Entity_Type_Definition: Stream water and sediment sample locations, quantities, and dates, table 2 of the report
    Attribute:
      Attribute_Label: LOCATION
      Attribute_Definition: Site location number plotted on figure 2 of the report
    Attribute:
      Attribute_Label: LATITUDE
      Attribute_Definition: Geographic latitude in decimal degrees
    Attribute:
      Attribute_Label: LONGITUDE
      Attribute_Definition: Geographic longitude in decimal degrees
    Attribute:
      Attribute_Label: WATER
      Attribute_Definition: Type of sampled material (value is 1 for water samples)
    Attribute:
      Attribute_Label: SEDIMENT
      Attribute_Definition: Type of sampled material (value is 1 for sediment samples)
    Attribute:
      Attribute_Label: DATE
      Attribute_Definition: Date the sample was collected
    Attribute:
      Attribute_Label: DESC
      Attribute_Definition: Description of the sample locality
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table3.dbf
      Entity_Type_Definition: Elemental composition of tailings, waste rock, and sediment at the Rathburn and Petray Mine sites, table 3 of the report.  Major elements in digests were determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Trace elements other than Hg were determined by inductively coupled plasma-mass spectrometry (ICP-MS). Hg was determined by cold vapor atomic absorption spectroscopy (CVAAS) following methods similar to those described by Crock (1996) and O'Leary and others (1996).
    Attribute:
      Attribute_Label: LOCATION
      Attribute_Definition: Site location number plotted on figure 2 of the report
    Attribute:
      Attribute_Label: SAMPLE_ID
      Attribute_Definition: Sample identification number
    Attribute:
      Attribute_Label: LOC_DESC
      Attribute_Definition: General geographic area
    Attribute:
      Attribute_Label: HG_PPM
      Attribute_Definition: Mercury measured using cold vapor atomic absorption spectroscopy, expressed in parts per million by weight
    Attribute:
      Attribute_Label: AG_PPM
      Attribute_Definition: Silver measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: AL_PCT
      Attribute_Definition: Aluminum measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: AS_PPM
      Attribute_Definition: Arsenic measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: AU_PPM
      Attribute_Definition: Gold measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: BA_PPM
      Attribute_Definition: Barium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: BE_PPM
      Attribute_Definition: Beryllium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: BI_PPM
      Attribute_Definition: Bismuth measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: CA_PCT
      Attribute_Definition: Calcium measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: CD_PPM
      Attribute_Definition: Cadmium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: CE_PPM
      Attribute_Definition: Cerium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: CO_PPM
      Attribute_Definition: Cobalt measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: CR_PPM
      Attribute_Definition: Chromium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: CS_PPM
      Attribute_Definition: Cesium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: CU_PPM
      Attribute_Definition: Copper measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: FE_PCT
      Attribute_Definition: Iron measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: GA_PPM
      Attribute_Definition: Gallium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: GE_PPM
      Attribute_Definition: Germanium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: HF_PPM
      Attribute_Definition: Hafnium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: IN_PPM
      Attribute_Definition: Indium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: K_PCT
      Attribute_Definition: Potassium measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: LA_PPM
      Attribute_Definition: Lanthanum measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: LI_PPM
      Attribute_Definition: Lithium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: MG_PCT
      Attribute_Definition: Magnesium measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: MN_PPM
      Attribute_Definition: Manganese measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: MO_PPM
      Attribute_Definition: Molybdenum measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: NA_PCT
      Attribute_Definition: Sodium measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: NB_PPM
      Attribute_Definition: Niobium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: NI_PPM
      Attribute_Definition: Nickel measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: P_PPM
      Attribute_Definition: Phosphorus measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: PB_PPM
      Attribute_Definition: Lead measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: RB_PPM
      Attribute_Definition: Rubidium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: RE_PPM
      Attribute_Definition: Rhenium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: S_PCT
      Attribute_Definition: Sulfur measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: SB_PPM
      Attribute_Definition: Antimony measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: SC_PPM
      Attribute_Definition: Scandium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: SE_PPM
      Attribute_Definition: Selenium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: SN_PPM
      Attribute_Definition: Tin measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: SR_PPM
      Attribute_Definition: Strontium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: TA_PPM
      Attribute_Definition: Tantalum measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: TE_PPM
      Attribute_Definition: Tellurium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: TH_PPM
      Attribute_Definition: Thorium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: TI_PCT
      Attribute_Definition: Titanium measured using inductively coupled plasma-atomic emission spectroscopy, expressed in percent by weight
    Attribute:
      Attribute_Label: TL_PPM
      Attribute_Definition: Thallium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: U_PPM
      Attribute_Definition: Uranium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: V_PPM
      Attribute_Definition: Vanadium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: W_PPM
      Attribute_Definition: Tungsten measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: Y_PPM
      Attribute_Definition: Yttrium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: ZN_PPM
      Attribute_Definition: Zinc measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
    Attribute:
      Attribute_Label: ZR_PPM
      Attribute_Definition: Zirconium measured using inductively coupled plasma mass spectrometry, expressed in parts per million by weight
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table4.dbf
      Entity_Type_Definition: Hg and methyl Hg in surface water, sediment, and porewater and sulfide in pore water, table 4 of the report
    Attribute:
      Attribute_Label: LOCATION
      Attribute_Definition: Site location number plotted on figure 2 of the report
    Attribute:
      Attribute_Label: DATE
      Attribute_Definition: Date sample was collected
    Attribute:
      Attribute_Label: MEDIUM
      Attribute_Definition: Type of sample material analyzed (sediment or pore water)
    Attribute:
      Attribute_Label: HG_H2O_UF
      Attribute_Definition: Mercury in water, unfiltered sample, nanograms per liter
    Attribute:
      Attribute_Label: HG_H2O_F
      Attribute_Definition: Mercury in water, sample filtered  < 0.45 µm, nanograms per liter
    Attribute:
      Attribute_Label: HG_H2O_M
      Attribute_Definition: Methylmercury in water, unfiltered sample, nanograms per liter
    Attribute:
      Attribute_Label: HG_SED_PCT
      Attribute_Definition: Mercury in sediment, percent by weight of solids
    Attribute:
      Attribute_Label: HG_SED_W
      Attribute_Definition: Mercury in wet sediment, µg/g
    Attribute:
      Attribute_Label: HG_SED_D
      Attribute_Definition: Mercury in dry sediment, µg/g
    Attribute:
      Attribute_Label: HG_SED_M_W
      Attribute_Definition: Methylmercury in wet sediment, nanograms per gram
    Attribute:
      Attribute_Label: HG_SED_M_D
      Attribute_Definition: Methylmercury in dry sediment, nanograms per gram
    Attribute:
      Attribute_Label: SULFIDE
      Attribute_Definition: Pore-water sulfide in µmol/L
    Attribute:
      Attribute_Label: UNC
      Attribute_Definition: Uncertainty (+/-) of field SULFIDE
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table5.dbf
      Entity_Type_Definition: Predicted proportions of saline ground water in water samples based on Cl concentration in spring, pore, and surface waters, table 5 of the report
    Attribute:
      Attribute_Label: LOCATION
      Attribute_Definition: Site location number plotted on figure 2 of the report
    Attribute:
      Attribute_Label: LOC_DESC
      Attribute_Definition: General geographic area
    Attribute:
      Attribute_Label: SITE_DESC
      Attribute_Definition: Site description
    Attribute:
      Attribute_Label: WEATHER
      Attribute_Definition: Weather conditions at time of sampling
    Attribute:
      Attribute_Label: CL_MGL
      Attribute_Definition: Chlorine ion concentration in mg/L determined by ion chromatography
    Attribute:
      Attribute_Label: PCT_SAL_GW
      Attribute_Definition: Percent saline groundwater
    Attribute:
      Attribute_Label: HG_H2O_U
      Attribute_Definition: Mercury in water, unfiltered sample, nanograms per liter
    Attribute:
      Attribute_Label: HG_H2O_F
      Attribute_Definition: Mercury in water, sample filtered  < 0.45 µm, nanograms per liter
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table6.dbf
      Entity_Type_Definition: Temperature, pH, alkalinity, and concentrations of selected anions, table 6 of the report
    Attribute:
      Attribute_Label: SAMPLE
      Attribute_Definition: Sample identification number
    Attribute:
      Attribute_Label: DATE
      Attribute_Definition: Date sample was collected
    Attribute:
      Attribute_Label: TEMP_C
      Attribute_Definition: Temperature of the water in degrees C
    Attribute:
      Attribute_Label: PH
      Attribute_Definition: pH of the water
    Attribute:
      Attribute_Label: SPEC_COND
      Attribute_Definition: Specific conductance, µS/cm
    Attribute:
      Attribute_Label: ACID_NEUT
      Attribute_Definition: Acid neutralizing potential, meq/L
    Attribute:
      Attribute_Label: CL
      Attribute_Definition: Chlorine ion concentration determined by ion chromatography, in mmol/L
    Attribute:
      Attribute_Label: SO4
      Attribute_Definition: Sulfate ion concentration determined by ion chromatography, in µmol/L
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: table7.dbf
      Entity_Type_Definition: Concentrations and properties of dissolved organic matter in saline ground water seepage sampled in Bear Valley, December 2006, table 7 of the report
    Attribute:
      Attribute_Label: LOCATION
      Attribute_Definition: Site location number plotted on figure 2 of the report
    Attribute:
      Attribute_Label: UV_ABSORB
      Attribute_Definition: Ultraviolet absorbance measured at a wavelength of 254 nm
    Attribute:
      Attribute_Label: DOC_MGL
      Attribute_Definition: Dissolved organic carbon, mg/L
    Attribute:
      Attribute_Label: SUVA
      Attribute_Definition: UV(254nm) / DOC (mg/l) * 100
    Attribute:
      Attribute_Label: FI
      Attribute_Definition: Fluorescence Index (ratio of the emission at 470nm / emission at 520nm, when excited at 370nm.)
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: USGS Information Services
      Contact_Address:
        Address_Type: mailing
        Address: Box 25286, Denver Federal Center
        City: Denver
        State_or_Province: Colorado
        Postal_Code: 80255-0046
        Country: USA
      Contact_Voice_Telephone: 1-888-ASK-USGS
      Contact_Facsimile_Telephone: 1-303-202-4695
      Contact_Electronic_Mail_Address: infoservices@usgs.gov
  Resource_Description: USGS Open-File Report 2008-1179
  Distribution_Liability:
    This report is preliminary and has not been reviewed for
    conformity with U.S. Geological Survey editorial standards (or
    with the North American Stratigraphic Code).  Any use of trade,
    product, or firm names is for descriptive purposes only and does
    not imply endorsement by the U.S. Government.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: Shapefile
        Format_Version_Number: 1.0
        Format_Information_Content: Characteristics and geochemical analyses of sampled water and sediment
        File_Decompression_Technique: unzip
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://pubs.usgs.gov/of/2008/1179/data/2008-1179.zip
    Fees: none
Metadata_Reference_Information:
  Metadata_Date: 20080806
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Peter N Schweitzer
        Contact_Organization: USGS ER GD
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing address
        Address: 12201 Sunrise Valley Drive
        City: Reston
        State_or_Province: VA
        Postal_Code: 20192-0002
        Country: USA
      Contact_Voice_Telephone: 703-648-6533
      Contact_Facsimile_Telephone: 703-648-6252
      Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
  Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998