Online Links:
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 73 |
Resolution: | 1 |
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 4 |
Resolution: | 1 |
Value | Definition |
---|---|
(no value) | The table row describes the table as a whole rather than one of its fields |
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 30 |
Resolution: | 1 |
Value | Definition |
---|---|
(no value) | The table row describes the table as a whole rather than one of its fields |
Value | Definition |
---|---|
(no value) | The table row describes the table as a whole rather than one of its fields |
Sample identification | Names, numbers, or other identifiers of the samples |
Processing information | Characteristics of the handling, processing, or analysis of the samples |
Geographic location | Information indicating the location from which the sample was collected |
Site characteristics | Information describing the environment from which the sample was taken |
Sample characteristics | Descriptive characteristics of the sample itself |
Chemical analysis | Results of analysis of the sample, typically quantitative |
Metadata | Information used to organize the data in this collection |
Value | Definition |
---|---|
(no value) | The table row describes the table as a whole rather than one of its fields |
Value | Definition |
---|---|
(no value) | Information not available for this record. 67 records have no value for link. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 67 records have no value for origin. |
Value | Definition |
---|---|
(no value) | the table row describes an entire table rather than a single field |
integer | Field contains integer values |
character varying | Field contains character values of varying length |
double precision | Field contains floating-point values |
Value | Definition |
---|---|
C | character data |
N | numeric data |
Value | Definition |
---|---|
(no value) | Information not available for this record. 4 records have no value for width. |
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 4096 |
Resolution: | 1 |
Value | Definition |
---|---|
(no value) | The field contains character data, or the row describes the table as a whole rather than an individual field |
Range of values | |
---|---|
Minimum: | 0 |
Maximum: | 6 |
Resolution: | 1 |
Value | Definition |
---|---|
(no value) | The field contains character data, the units are specified in a separate field of the table, or the row describes the table as a whole rather than an individual field |
Value | Definition |
---|---|
(no value) | Information not available for this record. 16 records have no value for field_id. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 91759 records have no value for date_collect. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 5946 records have no value for date_submitted. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 65476 records have no value for project_name. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 2146 records have no value for state. |
Formal codeset | |
---|---|
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. |
Range of values | |
---|---|
Minimum: | -49.81222222 |
Maximum: | 74.90833333 |
Units: | decimal degrees |
Range of values | |
---|---|
Minimum: | -179.36667 |
Maximum: | 179.9425 |
Units: | decimal degrees |
Value | Definition |
---|---|
European 1950 | European 1950 (which variant is not specified) |
Indonesian 1974 | Indonesian 1974 |
NAD27 | North American Datum of 1927 |
NAD83 | North American Datum of 1983 |
SAD69 | South American Datum 1969 |
WGS84 | World Geodetic System 1984 |
Range of values | |
---|---|
Minimum: | -49.81222222 |
Maximum: | 74.90833333 |
Units: | decimal degrees |
Range of values | |
---|---|
Minimum: | -179.36667 |
Maximum: | 179.9425 |
Units: | decimal degrees |
Value | Definition |
---|---|
(no value) | Information not available for this record. 90942 records have no value for depth. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 84711 records have no value for locate_desc. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 42785 records have no value for sample_source. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 32328 records have no value for method_collected. |
channel | material taken from a trench or linear excavation |
composite | material combined from several discrete takings |
other | collection method not one of those described by this field |
single/grab | material from a single act of taking at a single location |
sngl/cmpst/chnl | collection may have been single, composite, or channel |
unknown | collection method not known |
U | collection method not known |
Value | Definition |
---|---|
soil | unconsolidated earth materials developed in place from pre-existing surficial material |
Value | Definition |
---|---|
(no value) | Information not available for this record. 103081 records have no value for specific_name. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 43345 records have no value for addl_attr. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 98175 records have no value for geologic_age. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 85058 records have no value for stratigraphy. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 104005 records have no value for mineralization. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 72104 records have no value for sample_zone. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 86372 records have no value for horizon. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 94173 records have no value for saline. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 100961 records have no value for organics. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 92832 records have no value for ferritic. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 94488 records have no value for drainage. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 100184 records have no value for prep. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 78506 records have no value for mesh_size. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 104160 records have no value for collection_protocol. |
Gough, L.P. et al., 2000 | Collection procedure described in https://pubs.usgs.gov/of/2000/0327/ |
Value | Definition |
---|---|
(no value) | Information not available for this record. 103822 records have no value for previous_job_id. |
Value | Definition |
---|---|
(no value) | Information not available for this record. 104171 records have no value for previous_lab_id. |
Range of values | |
---|---|
Minimum: | 67911 |
Maximum: | 54405477 |
Resolution: | 1 |
Value | Definition |
---|---|
Li | Lithium |
Be | Beryllium |
B | Boron |
C_tot | Carbon (total) |
C_org | Carbon (organic) |
C_crb | Carbon (carbonate) |
CO2 | Carbon dioxide |
N | Nitrogen |
F | Fluorine |
Na | Sodium |
Mg | Magnesium |
Al | Aluminum |
Si | Silicon |
P | Phosphorus |
S | Sulfur |
Cl | Chlorine |
K | Potassium |
Ca | Calcium |
Sc | Scandium |
Ti | Titanium |
V | Vanadium |
Cr | Chromium |
Mn | Manganese |
Fe | Iron |
Co | Cobalt |
Ni | Nickel |
Cu | Copper |
Zn | Zinc |
Ga | Gallium |
Ge | Germanium |
As | Arsenic |
Se | Selenium |
Br | Bromine |
Rb | Rubidium |
Sr | Strontium |
Y | Yttrium |
Zr | Zirconium |
Nb | Niobium |
Mo | Molybdenum |
Ru | Ruthenium |
Rh | Rhodium |
Pd | Palladium |
Ag | Silver |
Cd | Cadmium |
In | Indium |
Sn | Tin |
Sb | Antimony |
Te | Tellurium |
I | Iodine |
Cs | Cesium |
Ba | Barium |
La | Lanthanum |
Ce | Cerium |
Pr | Praseodymium |
Nd | Neodymium |
Sm | Samarium |
Eu | Europium |
Gd | Gadolinium |
Tb | Terbium |
Dy | Dysprosium |
Ho | Holmium |
Er | Erbium |
Tm | Thulium |
Yb | Ytterbium |
Lu | Lutetium |
Hf | Hafnium |
Ta | Tantalum |
W | Tungsten |
Re | Rhenium |
Os | Osmium |
Ir | Iridium |
Pt | Platinum |
Au | Gold |
Hg | Mercury |
Tl | Thallium |
Pb | Lead |
Bi | Bismuth |
Th | Thorium |
U | Uranium |
SplWtAu | Weight of sample used for gold analysis |
SplWtFA | Weight of sample used for fire assay analysis |
Value | Definition |
---|---|
g | grams |
pct | percent by weight |
ppm | parts per million by weight |
Range of values | |
---|---|
Minimum: | -200000 |
Maximum: | 410000 |
Value | Definition |
---|---|
L | The measured value was less than the lower limit of determination by the method |
N | The chemical species was not detected by the method |
G | The measured value was greater than the analytical method's upper determination limit |
(less-than symbol) | The measured value was less than the lower limit of determination by the method |
(greater-than symbol) | The measured value was greater than the upper limit of determination by the method |
(no value) | The measured value is within the range of values for which the analytical method is considered valid. |
Value | Definition |
---|---|
AA_CV | Mercury by cold-vapor atomic absorption spectrometry after multi-acid digestion and solution. |
AA_CV_WO | 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. |
AA_F_AZ_Fuse_P | Silver, arsenic, bismuth, cadmium, copper, molybdenum, lead, antimony and zinc by flame atomic absorption spectrometry after partial digestion by K2S2O7 fusion, HCl-KI, ascorbic acid and selective organic extraction with Aliquat 336-MIBK. |
AA_F_AZ_H2O2_P | 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. |
AA_F_AZ_HCl_P | Silver, arsenic, bismuth, cadmium, antimony and zinc by flame atomic absorption spectrometry after partial digestion by HCl-KI, ascorbic acid and selective organic extraction with Aliquat 336-MIBK. |
AA_FE | Sodium and potassium by flame emission spectrometry (flame photometry) after HF-HClO4 dissolution or LiBO2 fusion. |
AA_F_Fuse | Major and minor elements by flame atomic absorption spectrometry after LiBO2/Li2B4O7 fusion digestion. |
AA_F_Fuse_P | 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. |
AA_F_HBr | Gold and tellurium by flame atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK. |
AA_F_HCl_OE_P | Antimony by flame atomic absorption spectrometry after NH4I fusion, digestion with HCl, and selective organic extraction with Aliquat 336-MIBK. |
AA_F_HCl_P | Copper and manganese by flame atomic absorption spectrometry after partial digestion with HCl. |
AA_F_HF | Major and minor elements by flame atomic absorption spectrometry after multi-acid digestion with HF. |
AA_F_HNO3_P | Silver, bismuth, cadmium, cobalt, copper, nickel, lead and zinc by flame atomic absorption spectrometry after partial digestion with hot HNO3. |
AA_GF_HBr | Gold and tellurium by graphite furnace atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK. |
AA_GF_HF | 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. |
AA_GF_ST | Thallium by graphite furnace atomic absorption spectrometry after Na2O2 sinter, HCl-HNO3 dissolution, and selective organic extraction with DIBK. |
AA_HG_Acid | Selenium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after digestion with HNO3-HCl-H2SO4-KMnO4. |
AA_HG_HF | Arsenic, antimony, selenium and tellurium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after multi-acid digestion with HF. |
AA_HG_ST | Arsenic and antimony by flow injection or continuous flow hydride generation-atomic absorption spectrometry after Na2O2 sinter digestion. |
AA_TR | Mercury by thermal release and atomic absorption spectrometry after heating (Vaughn-McCarthy method). |
AA_TR_W | Mercury by thermal release and atomic absorption spectrometry after heating (Vaughn-McCarthy method) and use of a willemite screen. |
AES_AR_P | Major and minor elements by inductively coupled plasma-atomic emission spectrometry after partial digestion with aqua regia. |
AES_AZ_P | Silver, arsenic, gold, bismuth, cadmium, copper, molybdenum, lead, antimony and zinc by inductively coupled plasma-atomic emission spectrometry after partial digestion with HCl-H2O2. |
AES_Fuse | Major and minor elements by inductively coupled plasma-atomic emission spectrometry after Li2B4O7 fusion digestion. |
AES_HF | Major and minor elements by inductively coupled plasma-atomic emission spectrometry after digestion with HF-HCl-HNO3-HClO4. |
AES_HF_REE | Rare earth elements by ion exchange and inductively coupled plasma-atomic emission quantitative spectrometry after HF-HCl-HNO3-HClO4 digestion. |
AES_IE | Molybdenum, niobium and tungsten by inductively coupled plasma-atomic emission quantitative spectrometry after HF-HCl-HNO3-HClO4 digestion and ion exchange separation. |
CB_CHN | Carbon, hydrogen and nitrogen by gas chromatography/thermal conductivity (CHN elemental) analyzer after combustion. |
CB_IRC | Carbon and sulfur by infrared detection after combustion. |
CB_TC | Total carbon and organic carbon by thermal conductivity detection after combustion. |
CB_TT | Sulfur by iodometric titration after combustion. |
CM_Acid | Bromine by colorimetry after acid digestion. |
CM_Acid_P | Arsenic by modified Gutzeit apparatus confined-spot method colorimetry after partial digestion in KOH-HCl and chemical separation. |
CM_Fuse | Major and minor elements by colorimetric spectrophotometry after fusion digestion. |
CM_Fuse_P | Molybdenum and antimony by colorimetry after partial digestion by K2S2O7 fusion (Mo) or NaHSO4 fusion-HCl digestion (Sb, rhodamine B). |
CM_HF | Major and minor elements by colorimetric spectrophotometry after multi-acid digestion with HF. |
CM_HNO3_P | Copper, lead and zinc by colorimetry after partial digestion with HNO3. |
CM_HSF | Fluorine by chemical separation and colorimetric spectrophotometry; chemical separation to fluorosilicic acid (H2SiF6), converted to silicomolybdate, reduced to Mo blue. |
CM_PC_P | Uranium by paper chromatography after partial digestion with HNO3. |
CM_SDDC | Arsenic by colorimetric spectrophotometry after digestion in HF-aqua regia and chemical separation with SDDC. |
CM_ST | Chloride by colorimetric spectrophotometry after Na2CO3 and ZnO sinter digestion. |
CM_ST_P | Tungsten by colorimetry after partial digestion with carbonate sinter. |
CP | Organic carbon, carbonate carbon and totals by computation. |
DN | Uranium and thorium by delayed neutron activation counting. |
EDX | Minor elements by energy-dispersive X-ray fluorescence spectrometry. |
ES_Q | Major and minor elements by quantitative emission spectrography. |
ES_SQ | Major and minor elements by semi-quantitative emission spectrography. |
FA_AA | Gold, silver and platinum group elements by graphite furnace atomic absorption spectrometry after PbO fire assay chemical separation. |
FA_DC | Gold by direct current plasma-atomic emission spectroscopy or atomic absorption spectrophotometry after PbO fire assay chemical separation. |
FA_ES | Gold and platinum group elements by direct-current arc quantitative emission spectrography after PbO fire assay chemical separation. |
FA_MS | Platinum group elements by inductively coupled plasma-mass spectrometry after NiS fire assay chemical separation. |
FL_Acid_P | Selenium by acid digestion and fluorometry; HNO3 digestion, H2O2 added, HClO4 digestion, HCl reduced, reacted with 2,3-diaminonapthalene. |
FL_HF | Beryllium, tin and uranium by fluorometry after multi-acid digestion with HF. |
GV | Density, moisture and weight by gravimetry; ash or loss on ignition by weight loss after heating at 900 degrees C. |
GV_WO | Organic carbon, as CO2, by wet oxidation and gravimetry; H2SO4 digestion, oxidized with CrO3-H2SO4, CO2 collected on ascarite; data from "Energy Group SP Open File UGR-068". |
IC_ST | ion chromatography after Na2O2 sinter digestion |
ISE_Fuse | Chloride, fluoride and iodide by ion specific electrode after fusion digestion. |
ISE_HF | Chloride by ion specific electrode after multi-acid digestion with HF. |
MS_HF | Major and minor elements by inductively coupled plasma-mass spectrometry after HF-HCl-HNO3-HClO4 digestion. |
MS_ST_REE | Rare earth elements by inductively coupled plasma-mass spectrometry after Na2O2 sinter digestion. |
NA_LC | Major and trace elements by long count instrumental neutron activation analysis; no digestion/extraction necessary. |
NA_SC | Major and trace elements by short (abbreviated) count instrumental neutron activation analysis; no digestion/extraction necessary. |
TT_HCl | Carbonate carbon and carbon dioxide (acid soluble carbon) by coulometric titration after HClO4 digestion and extraction. |
VOL | Carbon dioxide or carbonate carbon by evolution after acid decomposition; aka ""gasometric"" or ""manometric"". |
WDX_Fuse | Major and minor elements by wavelength-dispersive X-ray fluorescence spectrometry after LiBO2 fusion digestion. |
Value | Definition |
---|---|
Chem_ES | Chemical analyses by emission spectroscopy |
Chem_ICPAES | Chemical analyses by inductively-coupled plasma atomic emission spectroscopy |
Chem_ICPMS | Chemical analyses by inductively-coupled plasma mass spectroscopy |
Chem_NAA | Chemical analyses by neutron activation analysis |
Chem_Other | Chemical analyses of "totally" digested samples by methods other than those identified by other values of this field. |
Chem_XRF | Chemical analyses by either energy dispersive or wavelength dispersive X-ray fluorescence |
Partial_A2Z | Chemical analyses of partially digested samples using HCl with H2O2, KI, or both |
Partial_AqReg | Chemical analyses of partially digested samples using aqua regia |
Partial_Other | Chemical analyses of partially digested samples using other digestion procedures |
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 3680506 |
Resolution: | 1 |
Value | Definition |
---|---|
Li | Lithium |
Be | Beryllium |
B | Boron |
C_tot | Carbon (total) |
C_org | Carbon (organic) |
C_crb | Carbon (carbonate) |
CO2 | Carbon dioxide |
N | Nitrogen |
F | Fluorine |
Na | Sodium |
Mg | Magnesium |
Al | Aluminum |
Si | Silicon |
P | Phosphorus |
S | Sulfur |
Cl | Chlorine |
K | Potassium |
Ca | Calcium |
Sc | Scandium |
Ti | Titanium |
V | Vanadium |
Cr | Chromium |
Mn | Manganese |
Fe | Iron |
Co | Cobalt |
Ni | Nickel |
Cu | Copper |
Zn | Zinc |
Ga | Gallium |
Ge | Germanium |
As | Arsenic |
Se | Selenium |
Br | Bromine |
Rb | Rubidium |
Sr | Strontium |
Y | Yttrium |
Zr | Zirconium |
Nb | Niobium |
Mo | Molybdenum |
Ru | Ruthenium |
Rh | Rhodium |
Pd | Palladium |
Ag | Silver |
Cd | Cadmium |
In | Indium |
Sn | Tin |
Sb | Antimony |
Te | Tellurium |
I | Iodine |
Cs | Cesium |
Ba | Barium |
La | Lanthanum |
Ce | Cerium |
Pr | Praseodymium |
Nd | Neodymium |
Sm | Samarium |
Eu | Europium |
Gd | Gadolinium |
Tb | Terbium |
Dy | Dysprosium |
Ho | Holmium |
Er | Erbium |
Tm | Thulium |
Yb | Ytterbium |
Lu | Lutetium |
Hf | Hafnium |
Ta | Tantalum |
W | Tungsten |
Re | Rhenium |
Os | Osmium |
Ir | Iridium |
Pt | Platinum |
Au | Gold |
Hg | Mercury |
Tl | Thallium |
Pb | Lead |
Bi | Bismuth |
Th | Thorium |
U | Uranium |
SplWtAu | Weight of sample used for gold analysis |
SplWtFA | Weight of sample used for fire assay analysis |
Value | Definition |
---|---|
g | grams |
pct | percent by weight |
ppm | parts per million by weight |
Range of values | |
---|---|
Minimum: | -200000 |
Maximum: | 410000 |
Value | Definition |
---|---|
AA_CV | Mercury by cold-vapor atomic absorption spectrometry after multi-acid digestion and solution. |
AA_CV_WO | 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. |
AA_FE | Sodium and potassium by flame emission spectrometry (flame photometry) after HF-HClO4 dissolution or LiBO2 fusion. |
AA_F_Fuse | Major and minor elements by flame atomic absorption spectrometry after LiBO2/Li2B4O7 fusion digestion. |
AA_F_HBr | Gold and tellurium by flame atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK. |
AA_F_HF | Major and minor elements by flame atomic absorption spectrometry after multi-acid digestion with HF. |
AA_GF_HBr | Gold and tellurium by graphite furnace atomic absorption spectrometry after HBr-Br2 digestion and selective organic extraction with Aliquat 336-MIBK. |
AA_GF_HF | 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. |
AA_GF_ST | Thallium by graphite furnace atomic absorption spectrometry after Na2O2 sinter, HCl-HNO3 dissolution, and selective organic extraction with DIBK. |
AA_HG_Acid | Selenium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after digestion with HNO3-HCl-H2SO4-KMnO4. |
AA_HG_HF | Arsenic, antimony, selenium and tellurium by flow injection or continuous flow hydride generation-atomic absorption spectrometry after multi-acid digestion with HF. |
AA_HG_ST | Arsenic and antimony by flow injection or continuous flow hydride generation-atomic absorption spectrometry after Na2O2 sinter digestion. |
AA_TR | Mercury by thermal release and atomic absorption spectrometry after heating (Vaughn-McCarthy method). |
AA_TR_W | Mercury by thermal release and atomic absorption spectrometry after heating (Vaughn-McCarthy method) and use of a willemite screen. |
AES_Fuse | Major and minor elements by inductively coupled plasma-atomic emission spectrometry after Li2B4O7 fusion digestion. |
AES_HF | Major and minor elements by inductively coupled plasma-atomic emission spectrometry after digestion with HF-HCl-HNO3-HClO4. |
AES_HF_REE | Rare earth elements by ion exchange and inductively coupled plasma-atomic emission quantitative spectrometry after HF-HCl-HNO3-HClO4 digestion. |
AES_IE | Molybdenum, niobium and tungsten by inductively coupled plasma-atomic emission quantitative spectrometry after HF-HCl-HNO3-HClO4 digestion and ion exchange separation. |
CB_CHN | Carbon, hydrogen and nitrogen by gas chromatography/thermal conductivity (CHN elemental) analyzer after combustion. |
CB_IRC | Carbon and sulfur by infrared detection after combustion. |
CB_TC | Total carbon and organic carbon by thermal conductivity detection after combustion. |
CB_TT | Sulfur by iodometric titration after combustion. |
CM_Acid | Bromine by colorimetry after acid digestion. |
CM_Fuse | Major and minor elements by colorimetric spectrophotometry after fusion digestion. |
CM_HF | Major and minor elements by colorimetric spectrophotometry after multi-acid digestion with HF. |
CM_HSF | Fluorine by chemical separation and colorimetric spectrophotometry; chemical separation to fluorosilicic acid (H2SiF6), converted to silicomolybdate, reduced to Mo blue. |
CM_SDDC | Arsenic by colorimetric spectrophotometry after digestion in HF-aqua regia and chemical separation with SDDC. |
CM_ST | Chloride by colorimetric spectrophotometry after Na2CO3 and ZnO sinter digestion. |
CP | Organic carbon, carbonate carbon and totals by computation. |
DN | Uranium and thorium by delayed neutron activation counting. |
EDX | Minor elements by energy-dispersive X-ray fluorescence spectrometry. |
ES_Q | Major and minor elements by quantitative emission spectrography. |
ES_SQ | Major and minor elements by semi-quantitative emission spectrography. |
FA_AA | Gold, silver and platinum group elements by graphite furnace atomic absorption spectrometry after PbO fire assay chemical separation. |
FA_DC | Gold by direct current plasma-atomic emission spectroscopy or atomic absorption spectrophotometry after PbO fire assay chemical separation. |
FA_ES | Gold and platinum group elements by direct-current arc quantitative emission spectrography after PbO fire assay chemical separation. |
FA_MS | Platinum group elements by inductively coupled plasma-mass spectrometry after NiS fire assay chemical separation. |
FL_HF | Beryllium, tin and uranium by fluorometry after multi-acid digestion with HF. |
GV | Density, moisture and weight by gravimetry; ash or loss on ignition by weight loss after heating at 900 degrees C. |
GV_WO | Organic carbon, as CO2, by wet oxidation and gravimetry; H2SO4 digestion, oxidized with CrO3-H2SO4, CO2 collected on ascarite; data from "Energy Group SP Open File UGR-068". |
IC_ST | ion chromatography after Na2O2 sinter digestion |
ISE_Fuse | Chloride, fluoride and iodide by ion specific electrode after fusion digestion. |
ISE_HF | Chloride by ion specific electrode after multi-acid digestion with HF. |
MS_HF | Major and minor elements by inductively coupled plasma-mass spectrometry after HF-HCl-HNO3-HClO4 digestion. |
MS_ST_REE | Rare earth elements by inductively coupled plasma-mass spectrometry after Na2O2 sinter digestion. |
NA_LC | Major and trace elements by long count instrumental neutron activation analysis; no digestion/extraction necessary. |
NA_SC | Major and trace elements by short (abbreviated) count instrumental neutron activation analysis; no digestion/extraction necessary. |
TT_HCl | Carbonate carbon and carbon dioxide (acid soluble carbon) by coulometric titration after HClO4 digestion and extraction. |
VOL | Carbon dioxide or carbonate carbon by evolution after acid decomposition; aka ""gasometric"" or ""manometric"". |
WDX_Fuse | Major and minor elements by wavelength-dispersive X-ray fluorescence spectrometry after LiBO2 fusion digestion. |
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.
Online Links:
Online Links:
Species Samples Percent analyzed ------------------------------------ Ag 97284 93.0% Al 46118 44.0% As 93409 89.0% Au 87369 83.0% B 63191 60.0% Ba 94765 90.0% Be 94172 90.0% Bi 92670 88.0% Br 2256 2.0% Ca 95847 92.0% C_crb 8246 7.0% Cd 93058 89.0% Ce 44322 42.0% Cl 2804 2.0% Co 94884 91.0% CO2 3714 3.0% C_org 7156 6.0% Cr 95048 91.0% Cs 6925 6.0% C_tot 14778 14.0% Cu 97158 93.0% Dy 4294 4.0% Er 4049 3.0% Eu 37954 36.0% F 20401 19.0% Fe 96122 92.0% Ga 45828 43.0% Gd 4274 4.0% Ge 14213 13.0% Hf 12054 11.0% Hg 56326 54.0% Ho 30022 28.0% I 2301 2.0% In 16702 16.0% Ir 2687 2.0% K 54509 52.0% La 94521 90.0% Li 44755 42.0% Lu 4059 3.0% Mg 95822 91.0% Mn 96193 92.0% Mo 95941 92.0% N 6 0.0% Na 56055 53.0% Nb 90381 86.0% Nd 36253 34.0% Ni 94921 91.0% Os 2481 2.0% P 48009 46.0% Pb 96907 93.0% Pd 16595 15.0% Pr 9571 9.0% Pt 16282 15.0% Rb 10322 9.0% Re 11690 11.0% Rh 2645 2.0% Ru 2594 2.0% S 21406 20.0% Sb 75515 72.0% Sc 92889 89.0% Se 29614 28.0% Si 14972 14.0% Sm 10974 10.0% Sn 93615 89.0% SplWtAu 872 0.0% SplWtFA 30 0.0% Sr 94732 90.0% Ta 38261 36.0% Tb 5285 5.0% Te 29788 28.0% Th 55290 53.0% Ti 95621 91.0% Tl 18862 18.0% Tm 3574 3.0% U 44281 42.0% V 95210 91.0% W 66230 63.0% Y 95340 91.0% Yb 38032 36.0% Zn 94956 91.0% Zr 65840 63.0%
Are there legal restrictions on access or use of the data?Access_Constraints: none
Use_Constraints: none
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.
Data format: | Geochemical analyses of soil samples with site characteristics in format WMS (version 1.3.0) |
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Network links: |
https://mrdata.usgs.gov/services/ngdbsoil?request=GetCapabilities&service=WMS&version=1.3.0 |
Data format: | Simple shapefile with a url to the full report for each location, with all attribute data as included CSV files in format shapefile (version 1.0) Size: 54 |
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Network links: |
https://mrdata.usgs.gov/ngdb/soil/ngdbsoil-csv.zip |
Data format: | Simple shapefile with a url to the full report for each location, with all attribute data as included CSV files in format CSV (version 1.0) Size: 54 |
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Network links: |
https://mrdata.usgs.gov/ngdb/soil/ngdbsoil-csv.zip |