National Geochemical Database: Concentrate

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Title: National Geochemical Database: Concentrate
Publication_Date: 2016
Publication_Information:
Publisher: U.S. Geological Survey
Online_Linkage: https://mrdata.usgs.gov/ngdb/concentrate/
Description:
Abstract:
Geochemistry of concentrates from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska. Samples were collected and analyzed over many decades, beginning in the 1960s, though some samples may have been collected earlier.
Purpose:
The National Geochemical Database is a curated repository intended to contain all geochemical analyses carried out by and for geological studies conducted by the U.S. Geological Survey. Sample characteristics, including the location from which the sample was taken, and characteristics of the location and nearby geographic area, are included as well as analytical determinations of the concentration of elements and other chemical species. The work of USGS is strongly concentrated in earth sciences, so most of the analyses are of inorganic components. Likewise as a US Federal government organization, the work of USGS focuses on areas governed by the United States. Samples are located throughout the world, but most of the samples come from the US.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19640925
Ending_Date: 20070824
Currentness_Reference: Dates samples were submitted for analysis
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -174.58554758
East_Bounding_Coordinate: 151.85333333
North_Bounding_Coordinate: 71.04151751
South_Bounding_Coordinate: -46.86777778
Access_Constraints: none
Use_Constraints: none
Keywords:
Place:
Place_Keyword_Thesaurus: Common geographic areas
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Place_Keyword: fUS04 = Arizona
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Place_Keyword: fBG = Bangladesh
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Place_Keyword: fCI = Chile
Place_Keyword: fUS08 = Colorado
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Place_Keyword: fUS10 = Delaware
Place_Keyword: fUS64 = Federated States of Micronesia
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Place_Keyword: fUS15 = Hawaii
Place_Keyword: fUS16 = Idaho
Place_Keyword: fUS17 = Illinois
Place_Keyword: fUS18 = Indiana
Place_Keyword: fID = Indonesia
Place_Keyword: fUS19 = Iowa
Place_Keyword: fIR = Iran
Place_Keyword: fUS20 = Kansas
Place_Keyword: fUS21 = Kentucky
Place_Keyword: fUS22 = Louisiana
Place_Keyword: fUS23 = Maine
Place_Keyword: fUS24 = Maryland
Place_Keyword: fUS25 = Massachusetts
Place_Keyword: fUS26 = Michigan
Place_Keyword: fUS27 = Minnesota
Place_Keyword: fUS28 = Mississippi
Place_Keyword: fUS29 = Missouri
Place_Keyword: fUS30 = Montana
Place_Keyword: fUS31 = Nebraska
Place_Keyword: fUS32 = Nevada
Place_Keyword: fUS33 = New Hampshire
Place_Keyword: fUS34 = New Jersey
Place_Keyword: fUS35 = New Mexico
Place_Keyword: fUS36 = New York
Place_Keyword: fUS37 = North Carolina
Place_Keyword: fUS38 = North Dakota
Place_Keyword: fUS39 = Ohio
Place_Keyword: fUS40 = Oklahoma
Place_Keyword: fUS41 = Oregon
Place_Keyword: fUS42 = Pennsylvania
Place_Keyword: fUS44 = Rhode Island
Place_Keyword: fUS45 = South Carolina
Place_Keyword: fUS46 = South Dakota
Place_Keyword: fUS47 = Tennessee
Place_Keyword: fUS48 = Texas
Place_Keyword: fTU = Turkey
Place_Keyword: fUS = United States
Place_Keyword: fUS49 = Utah
Place_Keyword: fUS50 = Vermont
Place_Keyword: fUS51 = Virginia
Place_Keyword: fUS78 = Virgin Islands of the United States
Place_Keyword: fUS53 = Washington
Place_Keyword: fUS54 = West Virginia
Place_Keyword: fUS55 = Wisconsin
Place_Keyword: fUS56 = Wyoming
Theme:
Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data
Theme_Keyword: comma-delimited text
Theme_Keyword: DBF
Theme_Keyword: HTML table
Theme_Keyword: shapefile
Theme_Keyword: tab-delimited text
Theme:
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Theme_Keyword: aluminum
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Theme_Keyword: atomic absorption analysis
Theme_Keyword: atomic emission spectroscopy
Theme_Keyword: barium
Theme_Keyword: beryllium
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Theme_Keyword: bromine
Theme_Keyword: cadmium
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Theme_Keyword: chromatography
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Theme_Keyword: dysprosium
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Theme_Keyword: fluorine
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Theme_Keyword: geochemistry
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Theme_Keyword: vanadium
Theme_Keyword: x-ray fluorescence
Theme_Keyword: ytterbium
Theme_Keyword: yttrium
Theme_Keyword: zinc
Theme_Keyword: zirconium
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Steven M Smith
Contact_Organization: Southwest Region
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey
Box 25046 Mail Stop 973
Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: 303-236-1192
Contact_Facsimile_Telephone: 303-236-3200
Contact_Electronic_Mail_Address: smsmith@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: https://mrdata.usgs.gov/ngdb/concentrate/ngdbconc-large.png
Browse_Graphic_File_Description:
Schematic map showing sample density in the conterminous US, (768 x 512 pixels)
Browse_Graphic_File_Type: PNG
Data_Quality_Information:
Logical_Consistency_Report:
The samples described in the database were collected by a wide variety of researchers over a long period of time, and the analyses conducted on those samples were carried out for varying purposes. In addition, the sample preparation and analytical methodology varied through time as the technology available changed. The result is that samples may not be directly comparable due to differences in sampling procedure, preparation, analytical instrumentation, or choice of chemical species to analyze.
Completeness_Report:
In general, chemical analyses were carried out to pursue specific scientific objectives of a research project. Consequently there are no samples for which results were determined for every possible chemical analysis described in this database. Some analyses were rarely performed, and some were commonly performed. The table below shows, of the 335,026 samples, how many include an analysis, by any method, of each chemical species, with the proportion of samples (expressed as percent) for which an analysis of that chemical species was reported.

  Species  Samples Percent analyzed
------------------------------------
       Ag   135708 94.0%
       Al     4195  2.0%
       As   134231 93.0%
       Au   132742 92.0%
        B   131439 91.0%
       Ba   131200 91.0%
       Be   134104 93.0%
       Bi   134321 93.0%
       Ca   130776 91.0%
    C_crb      207  0.0%
       Cd   134548 93.0%
       Ce     3831  2.0%
       Co   134562 93.0%
    C_org      207  0.0%
       Cr   134218 93.0%
       Cs        6  0.0%
    C_tot      218  0.0%
       Cu   134751 94.0%
       Dy     2022  1.0%
       Er     2020  1.0%
       Eu     4062  2.0%
        F      710  0.0%
       Fe   131874 91.0%
       Ga    15270 10.0%
       Gd     2111  1.0%
       Ge    16624 11.0%
       Hf     3881  2.0%
       Hg     6482  4.0%
       Ho     2343  1.0%
        I        1  0.0%
       In     5157  3.0%
       Ir     2891  2.0%
        K     2811  1.0%
       La   130646 91.0%
       Li     4106  2.0%
       Lu     2133  1.0%
       Mg   131583 91.0%
       Mn   131644 91.0%
       Mo   134306 93.0%
       Na    14050  9.0%
       Nb   130684 91.0%
       Nd     2570  1.0%
       Ni   134610 93.0%
       Os     1765  1.0%
        P    15136 10.0%
       Pb   134799 94.0%
       Pd    20358 14.0%
       Pr     2067  1.0%
       Pt    20425 14.0%
       Rb        6  0.0%
       Re     3890  2.0%
       Rh     2939  2.0%
       Ru     2874  2.0%
        S      155  0.0%
       Sb   134112 93.0%
       Sc   121086 84.0%
       Se       16  0.0%
       Si     1488  1.0%
       Sm     2346  1.0%
       Sn   133663 93.0%
  SplWtAu     7031  4.0%
  SplWtFA      412  0.0%
       Sr   130369 90.0%
       Ta     4571  3.0%
       Tb     2125  1.0%
       Te     5452  3.0%
       Th   105098 73.0%
       Ti   133064 92.0%
       TI      340  0.0%
       Tl     5168  3.0%
       Tm     2130  1.0%
        U     6117  4.0%
        V   131878 91.0%
        W   135388 94.0%
        Y   131662 91.0%
       Yb     2578  1.0%
       Zn   135654 94.0%
       Zr   129836 90.0%
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Uncertainty of the point locations is exprssed, where this could be determined, in the field coord_prec_est. The information provided there accounts for the common and officially accepted practice, in years past, of specifying sampling locations by the southeast corner of the map quadrangle from which the sample was taken, and other indications that the original coordinates were expressed with limited precision. Yes, we know that accuracy and precision are not the same thing.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Sample depth is given as reported by the original investigator, and the compiler had no independent way to check those values.
Lineage:
Process_Step:
Process_Description:
Chemical analyses were carried out by USGS laboratories or by other organizations contracted by USGS to carry out those analyses, over a period of decades; these results begin in the 1960s and continue to this day.

Much of the data now in the NGDB had been previously compiled into other collections such as PLUTO and RASS. Those older databases are now subsumed into the NGDB and the concentrate sample analyses they contained are represented here.

This process occurred over many decades, and the current compilation has reached maturity in 2016.
Process_Date: 2016
Process_Step:
Process_Description:
The Best Value data set is a subset of data that represents one "best value" per species for each of its samples.

This data set was created by ranking analytical methods, taking into account factors which vary between methods. These include weight of sample analyzed, method of decomposition of the sample during the preparation for analysis, sensitivity and accuracy of the instrument used in each method, upper and lower limits of detection for a given element by a given method, the age of the method and stage of its development when a specific analysis was performed, and the exact analytical laboratory and equipment used. The dataset was populated, species by species, first with detected values, from the highest ranked analytical method to the lowest, and then with non-detect values, from the lowest to the highest. Each "best value" per species per sample has a value, an analytical method code for that value, and a summary of one or more possible values from which the "best value" was derived.
Process_Date: 2016
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
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Point_and_Vector_Object_Count: 143350
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Horizontal_Coordinate_System_Definition:
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Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System 1984
Ellipsoid_Name: WGS 84
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
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Order in which this field occurs in the database. Integer values. Integer of width 8.
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Attribute_Domain_Values:
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Characteristics of the handling, processing, or analysis of the samples
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Attribute_Domain_Values:
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Information describing the environment from which the sample was taken
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Descriptive name of the field used in some presentations, not constrained by rules affecting the label. Textual values of no more than 40 characters.
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Abbreviation of an organization, data set, or other entity responsible for defining the field. Textual values of no more than 12 characters.
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Data type of the field as used in the database. Textual values of no more than 8 characters.
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Data type of the field when expressed in DBF. Textual values of exactly 1 character.
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Field width.

Field width when expressed in DBF. Integer values. Integer of width 8.
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Precision of the field (places to right of decimal) when expressed in DBF, only for numeric fields. Integer values. Integer of width 8.
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Units of measure.

Units of measure of the field values. Textual values of no more than 64 characters.
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Detailed_Description:
Entity_Type:
Entity_Type_Label: main
Entity_Type_Definition:
Sample location, characteristics, and general methods of collection and analysis
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: lab_id
Attribute_Definition:
Lab ID.

Unique identifier assigned to each submitted sample by the Sample Control Officer of the analytical laboratory that received the sample. Textual values of no more than 10 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Alphanumeric identifiers without intrinsic scientific significance
Attribute:
Attribute_Label: field_id
Attribute_Definition:
Field ID.

Field identifier assigned by the sample collector, sometimes modified or truncated when keypunched to fit the available field width. Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
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Attribute_Domain_Values:
Unrepresentable_Domain:
Alphanumeric identifiers without intrinsic scientific significance
Attribute:
Attribute_Label: job_id
Attribute_Definition:
Job ID.

Laboratory batch identifier assigned by the Sample Control Officer of the analytical laboratory for each batch of samples received. Textual values of no more than 10 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Alphanumeric identifiers without intrinsic scientific significance
Attribute:
Attribute_Label: submitter
Attribute_Definition:
Submitter.

Name of the individual(s) who submitted the sample in a batch to the laboratory for analysis; not necessarily the sample collector. Textual values of no more than 80 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Names, unabbreviated
Attribute:
Attribute_Label: date_collect
Attribute_Definition:
Date collected.

Date sample was collected, as reported by submitter, mm/dd/yyyy. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
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Attribute_Domain_Values:
Unrepresentable_Domain:
While dates are generally formatted as month/day/year, the number of digits in these components varies, and some values are expressed as a range
Attribute:
Attribute_Label: date_submitted
Attribute_Definition:
Date submitted.

Date sample was submitted to Sample Control for initial database processing prior to sample prep and analysis, mm/dd/yyyy. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
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Enumerated_Domain_Value_Definition:
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Attribute_Domain_Values:
Unrepresentable_Domain:
Generally these dates follow the format month (2 digit) / day (2 digit) / year (4 digit)
Attribute:
Attribute_Label: project_name
Attribute_Definition:
Project name.

Project name, if known, that funded the collection and analysis of submitted samples. Textual values of no more than 80 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
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Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Names, typically unabbreviated, sometimes with question marks
Attribute:
Attribute_Label: state
Attribute_Definition:
State.

Abbreviation of state from where the sample was collected; only used within the United States. Textual values of no more than 2 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 6443 records have no value for state.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: U.S. Postal Service abbreviations for states and territories
Codeset_Source:
Post Office Department Publication 59, Abbreviations for Use with ZIP Code, October 1963, revised 1969.
Attribute:
Attribute_Label: country
Attribute_Definition:
Country.

Country from where the sample was collected. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Place or area names, mostly unabbreviated, including bodies of water.
Attribute:
Attribute_Label: lat_wgs84
Attribute_Definition:
Latitude (WGS84).

Latitude coordinate of sample site converted, if necessary, to the WGS84 datum, reported in decimal degrees. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -49.81222222
Range_Domain_Maximum: 74.90833333
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: long_wgs84
Attribute_Definition:
Longitude (WGS84).

Longitude coordinate of sample site converted, if necessary, to the WGS84 datum, reported in decimal degrees. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -179.36667
Range_Domain_Maximum: 179.9425
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: datum_orig
Attribute_Definition:
Original datum.

Original reference datum, when recorded, for the latitude and longitude coordinates of the sample site. Values in (parentheses) are a best estimate for original datum values that were not recorded. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: European 1950
Enumerated_Domain_Value_Definition: European 1950 (which variant is not specified)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Indonesian 1974
Enumerated_Domain_Value_Definition: Indonesian 1974
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NAD27
Enumerated_Domain_Value_Definition: North American Datum of 1927
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NAD83
Enumerated_Domain_Value_Definition: North American Datum of 1983
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SAD69
Enumerated_Domain_Value_Definition: South American Datum 1969
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: WGS84
Enumerated_Domain_Value_Definition: World Geodetic System 1984
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: lat_orig
Attribute_Definition:
Original latitude.

Original latitude coordinate of sample site as supplied by the sample submitter, reported in decimal degrees. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -49.81222222
Range_Domain_Maximum: 74.90833333
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: long_orig
Attribute_Definition:
Original longitude.

Original longitude coordinate of sample site as supplied by the sample submitter, reported in decimal degrees. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -179.36667
Range_Domain_Maximum: 179.9425
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: coord_prec_est
Attribute_Definition:
Precision of coordinate location.

Estimated precision of coordinates that were originally supplied by the sample submitter, reported to the nearest second, minute, degree, foot, or meter. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Explanatory text, not abbreviated
Attribute:
Attribute_Label: depth
Attribute_Definition:
Depth.

Depth from the surface at which the sample was collected; units are specified by the submitter. Textual values of no more than 80 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 142731 records have no value for depth.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: locate_desc
Attribute_Definition:
Location description.

Sample location description as supplied by the sample submitter. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 134649 records have no value for locate_desc.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Explanatory text, not abbreviated
Attribute:
Attribute_Label: sample_source
Attribute_Definition:
Sample source.

Sample source, parent material, or indication of the land cover. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 22341 records have no value for sample_source.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Short descriptive terms for the environment, not abbreviated, in some cases expressed as a set of closely related terms separated by slash to mean "or".
Attribute:
Attribute_Label: method_collected
Attribute_Definition:
Method of collection.

Method used to collect the sample. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 33637 records have no value for method_collected.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: channel
Enumerated_Domain_Value_Definition: material taken from a trench or linear excavation
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: composite
Enumerated_Domain_Value_Definition: material combined from several discrete takings
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: other
Enumerated_Domain_Value_Definition: collection method not one of those described by this field
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: single/grab
Enumerated_Domain_Value_Definition: material from a single act of taking at a single location
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sngl/cmpst/chnl
Enumerated_Domain_Value_Definition: collection may have been single, composite, or channel
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: unknown
Enumerated_Domain_Value_Definition: collection method not known
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: primary_class
Attribute_Definition:
Sample type.

Sample media primary classification. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sediment
Enumerated_Domain_Value_Definition:
unconsolidated earth materials, typically deposited by streams or other bodies of water
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: soil
Enumerated_Domain_Value_Definition:
unconsolidated earth materials developed in place from pre-existing surficial material
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: miscellaneous
Enumerated_Domain_Value_Definition: other earth materials possibly including pulverized rock
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: secondary_class
Attribute_Definition:
Sample type.

Sample media secondary classification. All values in the concentrate dataset equal CONCENTRATE. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute:
Attribute_Label: specific_name
Attribute_Definition:
Specific name.

Specific name or description of material that was submitted. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 15909 records have no value for specific_name.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Text indicating material, not abbreviated
Attribute:
Attribute_Label: addl_attr
Attribute_Definition:
Notes on sample.

Comment field that includes submitter supplied comments and text for additional attributes that are no longer maintained separately. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 7443 records have no value for addl_attr.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Text may contain identifiers, description, place names, or feature types
Attribute:
Attribute_Label: geologic_age
Attribute_Definition:
Geologic age.

Geologic age of the sample (or possibly the parent material) as supplied by the submitter. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 130035 records have no value for geologic_age.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Geologic periods, sometimes specified as a range of periods using hyphen
Attribute:
Attribute_Label: stratigraphy
Attribute_Definition:
Stratigraphy.

Stratigraphic formation name as supplied by the submitter. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 141335 records have no value for stratigraphy.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Formation names (sometimes abbreviated) or stream names
Attribute:
Attribute_Label: mineralization
Attribute_Definition:
Mineralization.

Indication of or type of mineralization associated with the sample. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 142983 records have no value for mineralization.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Short descriptive text indicating general form or process of mineral concentration, not abbreviated
Attribute:
Attribute_Label: sample_zone
Attribute_Definition:
Sample zone.

Soil horizon zone from which the soil sample was collected. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143283 records have no value for sample_zone.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Plain text, but the soil horizons themselves are indicated in symbolic form such as C or A, but there are a variety of unusual designations.
Attribute:
Attribute_Label: horizon
Attribute_Definition:
Soil horizon.

Indication of how well defined the sampled soil horizon was at the collection site. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143347 records have no value for horizon.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Plain descriptive text, unabbreviated.
Attribute:
Attribute_Label: saline
Attribute_Definition:
Saline.

Indication of whether the sampled soil was saline or non-saline. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143349 records have no value for saline.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Plain descriptive text, unabbreviated.
Attribute:
Attribute_Label: organics
Attribute_Definition:
Organics.

Indication of whether the sampled soil was highly organic or not. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143350 records have no value for organics.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Plain descriptive text, unabbreviated.
Attribute:
Attribute_Label: ferritic
Attribute_Definition:
Ferritic.

Indication of whether the sampled soil was ferritic (iron rich), highly ferritic, or non-ferritic. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143337 records have no value for ferritic.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Plain descriptive text, unabbreviated.
Attribute:
Attribute_Label: drainage
Attribute_Definition:
Drainage.

Indication of whether the sampled soil was well drained or poorly drained. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143349 records have no value for drainage.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Plain descriptive text, unabbreviated.
Attribute:
Attribute_Label: prep
Attribute_Definition:
Preparation.

Description of sample preparation procedures used prior to analyzing the sample. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 45899 records have no value for prep.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Descriptive text, may include program name such as NAWQA to indicate adherence to program preparation protocols
Attribute:
Attribute_Label: mesh_size
Attribute_Definition:
Sieve mesh size.

Mesh size used or final size fraction that was analyzed. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 86348 records have no value for mesh_size.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Descriptive text, may include procedural details such as "dry sieved"
Attribute:
Attribute_Label: collection_protocol
Attribute_Definition:
Collection protocol.

Standard or published protocol used for collecting and preparing the sample. Textual values of no more than 64 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143350 records have no value for collection_protocol.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NAWQA sediment collection protocol
Enumerated_Domain_Value_Definition:
Collection procedures followed guidelines of the National Water Quality Assessment program
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: previous_job_id
Attribute_Definition:
Previous job ID.

Previous laboratory batch identifier, used when a sample was resubmitted in a new batch for further analyses. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143350 records have no value for previous_job_id.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Alphanumeric identifier without further scientific significance
Attribute:
Attribute_Label: previous_lab_id
Attribute_Definition:
Previous lab ID.

Previous laboratory-assigned Unique identifier, used when a sample was resubmitted for further analyses and given an new Lab ID. Textual values of no more than 20 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
Information not available for this record. 143350 records have no value for previous_lab_id.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Alphanumeric identifier without further scientific significance
Detailed_Description:
Entity_Type:
Entity_Type_Label: chemistry
Entity_Type_Definition:
All chemical analyses recorded for the sample, with analytical method, measured values, and qualifiers to indicate where a measured value was outside the reliable determination limits of the method
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: rec_id
Attribute_Definition:
This field contains the unique sequence number by which the given analysis can be related to the corresponding record in the master database from which these records were drawn. Consequently this value would be used to identify records that required correction in the master database, if necessary.

Integer values. Integer of width 8.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 45289
Range_Domain_Maximum: 52354719
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: lab_id
Attribute_Definition:
Lab ID.

Unique identifier assigned to each submitted sample by the Sample Control Officer of the analytical laboratory that received the sample. Textual values of no more than 10 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Alphanumeric identifiers without intrinsic scientific significance
Attribute:
Attribute_Label: species
Attribute_Definition:
Chemical species.

Element, oxide, compound, or property that was determined or measured by the laboratory. Textual values of no more than 40 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Li
Enumerated_Domain_Value_Definition: Lithium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Be
Enumerated_Domain_Value_Definition: Beryllium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition: Boron
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C_tot
Enumerated_Domain_Value_Definition: Carbon (total)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C_org
Enumerated_Domain_Value_Definition: Carbon (organic)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C_crb
Enumerated_Domain_Value_Definition: Carbon (carbonate)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: F
Enumerated_Domain_Value_Definition: Fluorine
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Na
Enumerated_Domain_Value_Definition: Sodium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mg
Enumerated_Domain_Value_Definition: Magnesium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Al
Enumerated_Domain_Value_Definition: Aluminum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Si
Enumerated_Domain_Value_Definition: Silicon
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition: Phosphorus
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition: Sulfur
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: K
Enumerated_Domain_Value_Definition: Potassium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ca
Enumerated_Domain_Value_Definition: Calcium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sc
Enumerated_Domain_Value_Definition: Scandium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ti
Enumerated_Domain_Value_Definition: Titanium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: V
Enumerated_Domain_Value_Definition: Vanadium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cr
Enumerated_Domain_Value_Definition: Chromium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mn
Enumerated_Domain_Value_Definition: Manganese
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Fe
Enumerated_Domain_Value_Definition: Iron
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Co
Enumerated_Domain_Value_Definition: Cobalt
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ni
Enumerated_Domain_Value_Definition: Nickel
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cu
Enumerated_Domain_Value_Definition: Copper
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Zn
Enumerated_Domain_Value_Definition: Zinc
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ga
Enumerated_Domain_Value_Definition: Gallium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ge
Enumerated_Domain_Value_Definition: Germanium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: As
Enumerated_Domain_Value_Definition: Arsenic
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Se
Enumerated_Domain_Value_Definition: Selenium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rb
Enumerated_Domain_Value_Definition: Rubidium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sr
Enumerated_Domain_Value_Definition: Strontium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Y
Enumerated_Domain_Value_Definition: Yttrium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Zr
Enumerated_Domain_Value_Definition: Zirconium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nb
Enumerated_Domain_Value_Definition: Niobium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mo
Enumerated_Domain_Value_Definition: Molybdenum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ru
Enumerated_Domain_Value_Definition: Ruthenium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rh
Enumerated_Domain_Value_Definition: Rhodium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pd
Enumerated_Domain_Value_Definition: Palladium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ag
Enumerated_Domain_Value_Definition: Silver
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cd
Enumerated_Domain_Value_Definition: Cadmium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: In
Enumerated_Domain_Value_Definition: Indium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sn
Enumerated_Domain_Value_Definition: Tin
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sb
Enumerated_Domain_Value_Definition: Antimony
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Te
Enumerated_Domain_Value_Definition: Tellurium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: I
Enumerated_Domain_Value_Definition: Iodine
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cs
Enumerated_Domain_Value_Definition: Cesium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ba
Enumerated_Domain_Value_Definition: Barium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: La
Enumerated_Domain_Value_Definition: Lanthanum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ce
Enumerated_Domain_Value_Definition: Cerium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pr
Enumerated_Domain_Value_Definition: Praseodymium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nd
Enumerated_Domain_Value_Definition: Neodymium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sm
Enumerated_Domain_Value_Definition: Samarium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Eu
Enumerated_Domain_Value_Definition: Europium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Gd
Enumerated_Domain_Value_Definition: Gadolinium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tb
Enumerated_Domain_Value_Definition: Terbium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dy
Enumerated_Domain_Value_Definition: Dysprosium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ho
Enumerated_Domain_Value_Definition: Holmium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Er
Enumerated_Domain_Value_Definition: Erbium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tm
Enumerated_Domain_Value_Definition: Thulium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yb
Enumerated_Domain_Value_Definition: Ytterbium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Lu
Enumerated_Domain_Value_Definition: Lutetium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Hf
Enumerated_Domain_Value_Definition: Hafnium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ta
Enumerated_Domain_Value_Definition: Tantalum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: Tungsten
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Re
Enumerated_Domain_Value_Definition: Rhenium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Os
Enumerated_Domain_Value_Definition: Osmium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ir
Enumerated_Domain_Value_Definition: Iridium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pt
Enumerated_Domain_Value_Definition: Platinum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Au
Enumerated_Domain_Value_Definition: Gold
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Hg
Enumerated_Domain_Value_Definition: Mercury
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tl
Enumerated_Domain_Value_Definition: Thallium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pb
Enumerated_Domain_Value_Definition: Lead
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bi
Enumerated_Domain_Value_Definition: Bismuth
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Th
Enumerated_Domain_Value_Definition: Thorium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Uranium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SplWtAu
Enumerated_Domain_Value_Definition: Weight of sample used for gold analysis
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SplWtFA
Enumerated_Domain_Value_Definition: Weight of sample used for fire assay analysis
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: unit
Attribute_Definition:
Units of measure.

Unit of measurement associated with the accompanying concentration value. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: g
Enumerated_Domain_Value_Definition: grams
Enumerated_Domain_Value_Definition_Source: this report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: pct
Enumerated_Domain_Value_Definition: percent by weight
Enumerated_Domain_Value_Definition_Source: this report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ppm
Enumerated_Domain_Value_Definition: parts per million by weight
Enumerated_Domain_Value_Definition_Source: this report
Attribute:
Attribute_Label: qvalue
Attribute_Definition:
Measured value.

Qualified concentration value for the associated Species and reported in the associated Unit. Values less than the lower limit of determination are negative while values greater than the upper limit of determination have a .1111 suffix. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -10000
Range_Domain_Maximum: 940000
Attribute:
Attribute_Label: qualifier
Attribute_Definition:
Qualifier of measurement.

Qualifier (L, N, G, <, or >) for censored data. Only used in the All Chemistry tables. Textual values of no more than 1 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: L
Enumerated_Domain_Value_Definition:
The measured value was less than the lower limit of determination by the method
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: N
Enumerated_Domain_Value_Definition: The chemical species was not detected by the method
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: G
Enumerated_Domain_Value_Definition:
The measured value was greater than the analytical method's upper determination limit
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (less-than symbol)
Enumerated_Domain_Value_Definition:
The measured value was less than the lower limit of determination by the method
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (greater-than symbol)
Enumerated_Domain_Value_Definition:
The measured value was greater than the upper limit of determination by the method
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: (no value)
Enumerated_Domain_Value_Definition:
The measured value is within the range of values for which the analytical method is considered valid.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: amethod
Attribute_Definition:
Analytical method.

Analytical method code (abbreviation) for the method used to determine the associated Species. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_CV
Enumerated_Domain_Value_Definition:
Mercury by cold-vapor atomic absorption spectrometry after multi-acid digestion and solution.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_CV_WO
Enumerated_Domain_Value_Definition:
Mercury by wet oxidation and cold-vapor atomic absorption spectrometry ("flameless"); HNO3-H2SO4-HClO4 digestion, Hg aerated to silver screen, amalgamator heated in furnace, Hg vapor measured in AAS.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_FE
Enumerated_Domain_Value_Definition:
Sodium and potassium by flame emission spectrometry (flame photometry) after HF-HClO4 dissolution or LiBO2 fusion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_AZ_H2O2_P
Enumerated_Domain_Value_Definition:
Silver, arsenic, bismuth, cadmium, copper, molybdenum, lead, antimony and zinc by flame atomic absorption spectrometry after partial digestion with HCl-H2O2-KI, ascorbic acid and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_Fuse
Enumerated_Domain_Value_Definition:
Major and minor elements by flame atomic absorption spectrometry after LiBO2/Li2B4O7 fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_Fuse_P
Enumerated_Domain_Value_Definition:
Molybdenum and antimony by flame atomic absorption spectrometry after K2S2O7 (Mo) or NH4I (Sb) fusion, partial acid digestion, and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_HBr
Enumerated_Domain_Value_Definition:
Gold and tellurium by flame atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_HCl_OE_P
Enumerated_Domain_Value_Definition:
Antimony by flame atomic absorption spectrometry after NH4I fusion, digestion with HCl, and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by flame atomic absorption spectrometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_HNO3_P
Enumerated_Domain_Value_Definition:
Silver, bismuth, cadmium, cobalt, copper, nickel, lead and zinc by flame atomic absorption spectrometry after partial digestion with hot HNO3.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_GF_HBr
Enumerated_Domain_Value_Definition:
Gold and tellurium by graphite furnace atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_GF_HF
Enumerated_Domain_Value_Definition:
Arsenic, gold, bismuth, indium, antimony, tellurium and thallium by graphite furnace atomic absorption spectrometry after multi-acid digestion with HF and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_HG_Acid
Enumerated_Domain_Value_Definition:
Selenium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after digestion with HNO3-HCl-H2SO4-KMnO4.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_HG_HF
Enumerated_Domain_Value_Definition:
Arsenic, antimony, selenium and tellurium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_TR
Enumerated_Domain_Value_Definition:
Mercury by thermal release and atomic absorption spectrometry after heating (Vaughn-McCarthy method).
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AES_AR_P
Enumerated_Domain_Value_Definition:
Major and minor elements by inductively coupled plasma-atomic emission spectrometry after partial digestion with aqua regia.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AES_AZ_P
Enumerated_Domain_Value_Definition:
Silver, arsenic, gold, bismuth, cadmium, copper, molybdenum, lead, antimony and zinc by inductively coupled plasma-atomic emission spectrometry after partial digestion with HCl-H2O2.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AES_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by inductively coupled plasma-atomic emission spectrometry after digestion with HF-HCl-HNO3-HClO4.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CB_IRC
Enumerated_Domain_Value_Definition: Carbon and sulfur by infrared detection after combustion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CB_TC
Enumerated_Domain_Value_Definition:
Total carbon and organic carbon by thermal conductivity detection after combustion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CB_TT
Enumerated_Domain_Value_Definition: Sulfur by iodometric titration after combustion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_Acid
Enumerated_Domain_Value_Definition: Bromine by colorimetry after acid digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_Acid_P
Enumerated_Domain_Value_Definition:
Arsenic by modified Gutzeit apparatus confined-spot method colorimetry after partial digestion in KOH-HCl and chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_Fuse
Enumerated_Domain_Value_Definition:
Major and minor elements by colorimetric spectrophotometry after fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_Fuse_P
Enumerated_Domain_Value_Definition:
Molybdenum and antimony by colorimetry after partial digestion by K2S2O7 fusion (Mo) or NaHSO4 fusion-HCl digestion (Sb, rhodamine B).
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by colorimetric spectrophotometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_HNO3_P
Enumerated_Domain_Value_Definition:
Copper, lead and zinc by colorimetry after partial digestion with HNO3.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_HSF
Enumerated_Domain_Value_Definition:
Fluorine by chemical separation and colorimetric spectrophotometry; chemical separation to fluorosilicic acid (H2SiF6), converted to silicomolybdate, reduced to Mo blue.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_PC_P
Enumerated_Domain_Value_Definition:
Uranium by paper chromatography after partial digestion with HNO3.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_SDDC
Enumerated_Domain_Value_Definition:
Arsenic by colorimetric spectrophotometry after digestion in HF-aqua regia and chemical separation with SDDC.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_ST_P
Enumerated_Domain_Value_Definition:
Tungsten by colorimetry after partial digestion with carbonate sinter.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CP
Enumerated_Domain_Value_Definition: Organic carbon, carbonate carbon and totals by computation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DN
Enumerated_Domain_Value_Definition: Uranium and thorium by delayed neutron activation counting.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ES_Q
Enumerated_Domain_Value_Definition:
Major and minor elements by quantitative emission spectrography.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ES_SQ
Enumerated_Domain_Value_Definition:
Major and minor elements by semi-quantitative emission spectrography.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_AA
Enumerated_Domain_Value_Definition:
Gold, silver and platinum group elements by graphite furnace atomic absorption spectrometry after PbO fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_DC
Enumerated_Domain_Value_Definition:
Gold by direct current plasma-atomic emission spectroscopy or atomic absorption spectrophotometry after PbO fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_ES
Enumerated_Domain_Value_Definition:
Gold and platinum group elements by direct-current arc quantitative emission spectrography after PbO fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_MS
Enumerated_Domain_Value_Definition:
Platinum group elements by inductively coupled plasma-mass spectrometry after NiS fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FL_HF
Enumerated_Domain_Value_Definition:
Beryllium, tin and uranium by fluorometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GV
Enumerated_Domain_Value_Definition:
Density, moisture and weight by gravimetry; ash or loss on ignition by weight loss after heating at 900 degrees C.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ISE_Fuse
Enumerated_Domain_Value_Definition:
Chloride, fluoride and iodide by ion specific electrode after fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: MS_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by inductively coupled plasma-mass spectrometry after HF-HCl-HNO3-HClO4 digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NA_LC
Enumerated_Domain_Value_Definition:
Major and trace elements by long count instrumental neutron activation analysis; no digestion/extraction necessary.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NA_SC
Enumerated_Domain_Value_Definition:
Major and trace elements by short (abbreviated) count instrumental neutron activation analysis; no digestion/extraction necessary.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: VOL
Enumerated_Domain_Value_Definition:
Carbon dioxide or carbonate carbon by evolution after acid decomposition; aka ""gasometric"" or ""manometric"".
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: WDX_Fuse
Enumerated_Domain_Value_Definition:
Major and minor elements by wavelength-dispersive X-ray fluorescence spectrometry after LiBO2 fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute:
Attribute_Label: parameter
Attribute_Definition:
Parameter.

The suggested field name for a Species_Unit_Method column in crosstabbed chemistry tables. These field names concatenate the Species and Unit fields, and includes the general analytical method (first part of the amethod field). Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Concatenation of species, unit, and the characters of the amethod field to the left of the first underscore.
Attribute:
Attribute_Label: tblname
Attribute_Definition:
Table name.

Textual values of no more than 16 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chem_ES
Enumerated_Domain_Value_Definition: Chemical analyses by emission spectroscopy
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chem_ICPAES
Enumerated_Domain_Value_Definition:
Chemical analyses by inductively-coupled plasma atomic emission spectroscopy
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chem_ICPMS
Enumerated_Domain_Value_Definition:
Chemical analyses by inductively-coupled plasma mass spectroscopy
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chem_NAA
Enumerated_Domain_Value_Definition: Chemical analyses by neutron activation analysis
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chem_Other
Enumerated_Domain_Value_Definition:
Chemical analyses of "totally" digested samples by methods other than those identified by other values of this field.
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chem_XRF
Enumerated_Domain_Value_Definition:
Chemical analyses by either energy dispersive or wavelength dispersive X-ray fluorescence
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Partial_A2Z
Enumerated_Domain_Value_Definition:
Chemical analyses of partially digested samples using HCl with H2O2, KI, or both
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Partial_AqReg
Enumerated_Domain_Value_Definition:
Chemical analyses of partially digested samples using aqua regia
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Partial_Other
Enumerated_Domain_Value_Definition:
Chemical analyses of partially digested samples using other digestion procedures
Enumerated_Domain_Value_Definition_Source: this data release
Detailed_Description:
Entity_Type:
Entity_Type_Label: bestvalue
Entity_Type_Definition:
Best analytic value for each element obtained by selecting the most reliable analytic methods from among those that were performed on the sample
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: rec_id
Attribute_Definition:
Record ID.

Integer values. Integer of width 8.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 4287923
Attribute_Measurement_Resolution: 1
Attribute:
Attribute_Label: lab_id
Attribute_Definition:
Lab ID.

Unique identifier assigned to each submitted sample by the Sample Control Officer of the analytical laboratory that received the sample. Textual values of no more than 10 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Alphanumeric identifiers without intrinsic scientific significance
Attribute:
Attribute_Label: species
Attribute_Definition:
Chemical species.

Element, oxide, compound, or property that was determined or measured by the laboratory. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Li
Enumerated_Domain_Value_Definition: Lithium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Be
Enumerated_Domain_Value_Definition: Beryllium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: B
Enumerated_Domain_Value_Definition: Boron
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C_tot
Enumerated_Domain_Value_Definition: Carbon (total)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C_org
Enumerated_Domain_Value_Definition: Carbon (organic)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: C_crb
Enumerated_Domain_Value_Definition: Carbon (carbonate)
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: F
Enumerated_Domain_Value_Definition: Fluorine
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Na
Enumerated_Domain_Value_Definition: Sodium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mg
Enumerated_Domain_Value_Definition: Magnesium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Al
Enumerated_Domain_Value_Definition: Aluminum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Si
Enumerated_Domain_Value_Definition: Silicon
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition: Phosphorus
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: S
Enumerated_Domain_Value_Definition: Sulfur
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: K
Enumerated_Domain_Value_Definition: Potassium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ca
Enumerated_Domain_Value_Definition: Calcium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sc
Enumerated_Domain_Value_Definition: Scandium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ti
Enumerated_Domain_Value_Definition: Titanium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: V
Enumerated_Domain_Value_Definition: Vanadium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cr
Enumerated_Domain_Value_Definition: Chromium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mn
Enumerated_Domain_Value_Definition: Manganese
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Fe
Enumerated_Domain_Value_Definition: Iron
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Co
Enumerated_Domain_Value_Definition: Cobalt
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ni
Enumerated_Domain_Value_Definition: Nickel
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cu
Enumerated_Domain_Value_Definition: Copper
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Zn
Enumerated_Domain_Value_Definition: Zinc
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ga
Enumerated_Domain_Value_Definition: Gallium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ge
Enumerated_Domain_Value_Definition: Germanium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: As
Enumerated_Domain_Value_Definition: Arsenic
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Se
Enumerated_Domain_Value_Definition: Selenium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rb
Enumerated_Domain_Value_Definition: Rubidium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sr
Enumerated_Domain_Value_Definition: Strontium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Y
Enumerated_Domain_Value_Definition: Yttrium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Zr
Enumerated_Domain_Value_Definition: Zirconium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nb
Enumerated_Domain_Value_Definition: Niobium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mo
Enumerated_Domain_Value_Definition: Molybdenum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ru
Enumerated_Domain_Value_Definition: Ruthenium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Rh
Enumerated_Domain_Value_Definition: Rhodium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pd
Enumerated_Domain_Value_Definition: Palladium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ag
Enumerated_Domain_Value_Definition: Silver
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cd
Enumerated_Domain_Value_Definition: Cadmium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: In
Enumerated_Domain_Value_Definition: Indium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sn
Enumerated_Domain_Value_Definition: Tin
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sb
Enumerated_Domain_Value_Definition: Antimony
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Te
Enumerated_Domain_Value_Definition: Tellurium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: I
Enumerated_Domain_Value_Definition: Iodine
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cs
Enumerated_Domain_Value_Definition: Cesium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ba
Enumerated_Domain_Value_Definition: Barium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: La
Enumerated_Domain_Value_Definition: Lanthanum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ce
Enumerated_Domain_Value_Definition: Cerium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pr
Enumerated_Domain_Value_Definition: Praseodymium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nd
Enumerated_Domain_Value_Definition: Neodymium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Sm
Enumerated_Domain_Value_Definition: Samarium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Eu
Enumerated_Domain_Value_Definition: Europium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Gd
Enumerated_Domain_Value_Definition: Gadolinium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tb
Enumerated_Domain_Value_Definition: Terbium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dy
Enumerated_Domain_Value_Definition: Dysprosium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ho
Enumerated_Domain_Value_Definition: Holmium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Er
Enumerated_Domain_Value_Definition: Erbium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tm
Enumerated_Domain_Value_Definition: Thulium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Yb
Enumerated_Domain_Value_Definition: Ytterbium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Lu
Enumerated_Domain_Value_Definition: Lutetium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Hf
Enumerated_Domain_Value_Definition: Hafnium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ta
Enumerated_Domain_Value_Definition: Tantalum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: W
Enumerated_Domain_Value_Definition: Tungsten
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Re
Enumerated_Domain_Value_Definition: Rhenium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Os
Enumerated_Domain_Value_Definition: Osmium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ir
Enumerated_Domain_Value_Definition: Iridium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pt
Enumerated_Domain_Value_Definition: Platinum
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Au
Enumerated_Domain_Value_Definition: Gold
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Hg
Enumerated_Domain_Value_Definition: Mercury
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tl
Enumerated_Domain_Value_Definition: Thallium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Pb
Enumerated_Domain_Value_Definition: Lead
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bi
Enumerated_Domain_Value_Definition: Bismuth
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Th
Enumerated_Domain_Value_Definition: Thorium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: U
Enumerated_Domain_Value_Definition: Uranium
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SplWtAu
Enumerated_Domain_Value_Definition: Weight of sample used for gold analysis
Enumerated_Domain_Value_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: SplWtFA
Enumerated_Domain_Value_Definition: Weight of sample used for fire assay analysis
Enumerated_Domain_Value_Definition_Source: this data release
Attribute:
Attribute_Label: unit
Attribute_Definition:
Units of measure.

Unit of measurement associated with the accompanying concentration value. Textual values of no more than 8 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: g
Enumerated_Domain_Value_Definition: grams
Enumerated_Domain_Value_Definition_Source: this report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: pct
Enumerated_Domain_Value_Definition: percent by weight
Enumerated_Domain_Value_Definition_Source: this report
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ppm
Enumerated_Domain_Value_Definition: parts per million by weight
Enumerated_Domain_Value_Definition_Source: this report
Attribute:
Attribute_Label: qvalue
Attribute_Definition:
Qualified value.

Qualified concentration value for the associated Species and reported in the associated Unit. Values less than the lower limit of determination are negative while values greater than the upper limit of determination have a .1111 suffix. Real numbers stored in double precision.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -10000
Range_Domain_Maximum: 940000
Attribute:
Attribute_Label: amethod
Attribute_Definition:
Analytical method.

Analytical method code (abbreviation) for the method used to determine the associated Species. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_CV
Enumerated_Domain_Value_Definition:
Mercury by cold-vapor atomic absorption spectrometry after multi-acid digestion and solution.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_CV_WO
Enumerated_Domain_Value_Definition:
Mercury by wet oxidation and cold-vapor atomic absorption spectrometry ("flameless"); HNO3-H2SO4-HClO4 digestion, Hg aerated to silver screen, amalgamator heated in furnace, Hg vapor measured in AAS.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_FE
Enumerated_Domain_Value_Definition:
Sodium and potassium by flame emission spectrometry (flame photometry) after HF-HClO4 dissolution or LiBO2 fusion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_Fuse
Enumerated_Domain_Value_Definition:
Major and minor elements by flame atomic absorption spectrometry after LiBO2/Li2B4O7 fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_HBr
Enumerated_Domain_Value_Definition:
Gold and tellurium by flame atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_F_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by flame atomic absorption spectrometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_GF_HBr
Enumerated_Domain_Value_Definition:
Gold and tellurium by graphite furnace atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_GF_HF
Enumerated_Domain_Value_Definition:
Arsenic, gold, bismuth, indium, antimony, tellurium and thallium by graphite furnace atomic absorption spectrometry after multi-acid digestion with HF and selective organic extraction with Aliquat 336-MIBK.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_HG_Acid
Enumerated_Domain_Value_Definition:
Selenium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after digestion with HNO3-HCl-H2SO4-KMnO4.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_HG_HF
Enumerated_Domain_Value_Definition:
Arsenic, antimony, selenium and tellurium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AA_TR
Enumerated_Domain_Value_Definition:
Mercury by thermal release and atomic absorption spectrometry after heating (Vaughn-McCarthy method).
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AES_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by inductively coupled plasma-atomic emission spectrometry after digestion with HF-HCl-HNO3-HClO4.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CB_IRC
Enumerated_Domain_Value_Definition: Carbon and sulfur by infrared detection after combustion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CB_TC
Enumerated_Domain_Value_Definition:
Total carbon and organic carbon by thermal conductivity detection after combustion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CB_TT
Enumerated_Domain_Value_Definition: Sulfur by iodometric titration after combustion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_Acid
Enumerated_Domain_Value_Definition: Bromine by colorimetry after acid digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_Fuse
Enumerated_Domain_Value_Definition:
Major and minor elements by colorimetric spectrophotometry after fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by colorimetric spectrophotometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_HSF
Enumerated_Domain_Value_Definition:
Fluorine by chemical separation and colorimetric spectrophotometry; chemical separation to fluorosilicic acid (H2SiF6), converted to silicomolybdate, reduced to Mo blue.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CM_SDDC
Enumerated_Domain_Value_Definition:
Arsenic by colorimetric spectrophotometry after digestion in HF-aqua regia and chemical separation with SDDC.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CP
Enumerated_Domain_Value_Definition: Organic carbon, carbonate carbon and totals by computation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DN
Enumerated_Domain_Value_Definition: Uranium and thorium by delayed neutron activation counting.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ES_Q
Enumerated_Domain_Value_Definition:
Major and minor elements by quantitative emission spectrography.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ES_SQ
Enumerated_Domain_Value_Definition:
Major and minor elements by semi-quantitative emission spectrography.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_AA
Enumerated_Domain_Value_Definition:
Gold, silver and platinum group elements by graphite furnace atomic absorption spectrometry after PbO fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_DC
Enumerated_Domain_Value_Definition:
Gold by direct current plasma-atomic emission spectroscopy or atomic absorption spectrophotometry after PbO fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_ES
Enumerated_Domain_Value_Definition:
Gold and platinum group elements by direct-current arc quantitative emission spectrography after PbO fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FA_MS
Enumerated_Domain_Value_Definition:
Platinum group elements by inductively coupled plasma-mass spectrometry after NiS fire assay chemical separation.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: FL_HF
Enumerated_Domain_Value_Definition:
Beryllium, tin and uranium by fluorometry after multi-acid digestion with HF.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GV
Enumerated_Domain_Value_Definition:
Density, moisture and weight by gravimetry; ash or loss on ignition by weight loss after heating at 900 degrees C.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ISE_Fuse
Enumerated_Domain_Value_Definition:
Chloride, fluoride and iodide by ion specific electrode after fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: MS_HF
Enumerated_Domain_Value_Definition:
Major and minor elements by inductively coupled plasma-mass spectrometry after HF-HCl-HNO3-HClO4 digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NA_LC
Enumerated_Domain_Value_Definition:
Major and trace elements by long count instrumental neutron activation analysis; no digestion/extraction necessary.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NA_SC
Enumerated_Domain_Value_Definition:
Major and trace elements by short (abbreviated) count instrumental neutron activation analysis; no digestion/extraction necessary.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: VOL
Enumerated_Domain_Value_Definition:
Carbon dioxide or carbonate carbon by evolution after acid decomposition; aka ""gasometric"" or ""manometric"".
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: WDX_Fuse
Enumerated_Domain_Value_Definition:
Major and minor elements by wavelength-dispersive X-ray fluorescence spectrometry after LiBO2 fusion digestion.
Enumerated_Domain_Value_Definition_Source: https://mrdata.usgs.gov/agdb/method.php
Attribute:
Attribute_Label: summary
Attribute_Definition:
Related analyses.

Summary of all analyses for the total concentration of a single element in a samples; analyses are listed in order of 'Best Value'. Used only in the bestvalue table. Textual values of no more than 256 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
List of the values of concentration and analytical method drawn from fields of the chemistry table where lab_id and chemical species matches the row.
Attribute:
Attribute_Label: parameter
Attribute_Definition:
Parameter.

The suggested field name for a Species_Unit column in crosstabbed chemistry tables. These field names concatenate the Species and Unit fields. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain:
Concatenation of chemical species and unit fields, separated by underscore
Attribute:
Attribute_Label: mthd_parameter
Attribute_Definition:
Method parameter.

The suggested field name for an AMethod column in crosstabbed chemistry tables. Textual values of no more than 32 characters.
Attribute_Definition_Source: this data release
Attribute_Domain_Values:
Unrepresentable_Domain: Concatenation of chemical species field value and "_Mthd"
Distribution_Information:
Distributor:
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
Distribution_Liability:
This database has been approved for release by the U.S. Geological Survey (USGS). Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the database is released on condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: WMS
Format_Version_Number: 1.3.0
Format_Information_Content:
Geochemical analyses of concentrate samples with site characteristics
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Digital_Form:
Digital_Transfer_Information:
Format_Name: shapefile
Format_Version_Number: 1.0
Format_Information_Content:
Simple shapefile with a url to the full report for each location, with all attribute data as included CSV files
Transfer_Size: 52
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Version_Number: 1.0
Format_Information_Content:
Simple shapefile with a url to the full report for each location, with all attribute data as included CSV files
Transfer_Size: 52
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20161207
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Schweitzer, Peter, N
Contact_Organization: Eastern Mineral Resources Team
Contact_Address:
Address_Type: mailing address
Address: 12201 Sunrise Valley Drive Mail Stop 954
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6533
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://mrdata.usgs.gov/metadata/ngdbconc.html>
Generated by mp version 2.9.47 on Mon Mar 26 17:20:49 2018