Geochemical reanalysis of rock and sediment samples from the Middle Fork and South Fork of the Salmon River collected in the mid-1960s through the early 1970s as part of the Idaho Primitive Area studies

LaDonna M. Choate JoAnn M. Holloway Ben N. McGee 20220824 Geochemical reanalysis of rock and sediment samples from the Middle Fork and South Fork of the Salmon River collected in the mid-1960s through the early 1970s as part of the Idaho Primitive Area studies Tabular Values Denver, CO U.S. Geological Survey Additional information about originators (ORCID identifier): LaDonna M. Choate (https://orcid.org/0000-0002-0229-7210), JoAnn M. Holloway (https://orcid.org/0000-0003-3603-7668), Ben N. McGee (https://orcid.org/0000-0001-8798-0037 Online_Linkage: https://doi.org/10.5066/P9468006 Suggested citation: Choate, L.M., Holloway, J.M., and McGee, B.N., 2022, Geochemical reanalysis of rock and sediment samples from the Middle Fork and South Fork of the Salmon River collected in the mid-1960s through the early 1970s as part of the Idaho Primitive Area studies: U.S. Geological Survey data release, https://doi.org/10.5066/P9468006. https://doi.org/10.5066/P9468006 This data release is a geochemical data set from the reanalysis of 23 rock and 85 sediment samples collected between 1966 and 1970 by the U.S. Geological Survey (USGS) for a series of studies investigating the mineral resources of the Idaho Primitive Area (Cater et al., 1973). The samples are from the upper Middle Fork Salmon River and the South Fork Salmon River, including the tributaries of East Fork of the South Fork and Porphyry Creek. The overall objective of this study is to characterize the regional impact of legacy mining for the Frank Church - River of No Return Wilderness Area. In 1980 the U. S. Congress passed the Central Idaho Wilderness Act which combined the Idaho Primitive Area, the Salmon Rivers Breaks Primitive Area, and other wilderness into the River of No Return Wilderness Area. Frank Church was added to the name in 1984 changing it to the Frank Church - River of No Return Wilderness with the signing of legislation in 1984 (USDA Forest Service, 2001). Stream sediment and rock samples collected for the USGS Idaho Primitive Area mineral resource assessment is summarized in Granitto and Lund (2020). The samples collected in 1966-1970 were analyzed using semiquantitative spectrographic methods for major and trace elements. Some samples were analyzed by wet chemical methods for cobalt while arsenic, copper, and heavy metals were analyzed for all sediments and some mineralized rocks. These methods did not produce data for the total element concentration of the sample. Samples containing large amounts of rare-earth elements were analyzed by quantitative emission spectrography. Samples were analyzed in several U.S. Geological Survey laboratories over a 4-year period using different analytical techniques. These techniques were modified and refined during this period (Cater et al., 1973). Consequently, not all the reported results summarized are directly comparable. A subset of the archived materials was reanalyzed using current standard methods for consistency allowing comparability for all elements. Analytical techniques used for the reanalyzed samples reported here include a 60-element analysis following a sodium peroxide fusion by either inductively coupled plasma-optical emission spectrometry (ICP-OES) or inductively coupled plasma-mass spectrometry (ICP-MS). Arsenic was also determined using hydride generation atomic absorption spectrometry (HGAAS) following a sodium peroxide fusion since the arsenic detection limit is 10 times lower for this technique. Thus, these new data for archived sediment and rocks from the Middle Fork and South Fork of the Salmon River are internally consistent and directly comparable. References cited above: Cater, F.W., Pickney, D.M, Hamilton, W.B, Parker, R.L., Weldin, R.D., Close, T.J., and Zilka, N.T., 1973, Mineral Resources of the Idaho Primitive Area and Vicinity, Idaho: Geological Survey Bulletin 1304, p. 445. USDA Forest Service, 2001, A User's Guide Frank Church - River of No Return Wilderness, Frank Church River of No Return Wilderness, Salmon, Idaho, p. 39. Granitto, M., and Lund, K., 2020, Geochemical Data Release for Idaho Primitive Area, including the contiguous Clear Creek-Upper Big Deer Creek Area, the Salmon River Breaks Primitive Area, the Sawtooth Primitive Area, and adjacent areas, central Idaho: U.S. Geological Survey data release, https://doi.org/10.5066/P9BT11RJ. Legacy rock and sediment samples collected by the U.S. Geological Survey as part of the Idaho Primitive Area Studies (1966-1970) were reanalyzed to identify headwater streams with elevated trace metals from geological sources within Frank Church - River of No Return Wilderness Area. 20210302 20210309 Analytical results were received Complete None planned -115.4718 -114.7182 45.4692 44.2196 ISO 19115 Topic Category geoscientificInformation biota USGS Thesaurus geology igneous rocks plutonic rocks volcanic rocks metamorphic rocks sedimentary rocks foliation mineralization mineral deposits mineral resources critical minerals nonmetallic mineral resources metallic mineral resources economic geology geochemistry chemical analysis atomic absorption analysis atomic emission spectroscopy mass spectroscopy aluminum antimony arsenic barium beryllium bismuth boron cadmium calcium cerium cesium chromium cobalt copper dysprosium erbium europium gadolinium gallium germanium hafnium holmium indium iron lanthanum lead lithium lutetium magnesium manganese molybdenum neodymium nickel niobium phosphorus potassium praseodymium rhenium rubidium samarium scandium selenium silicon silver strontium sulfur tantalum tellurium terbium thallium thulium tin titanium tungsten uranium vanadium ytterbium yttrium zinc zirconium rare earth elements Lithologic classification of geologic map units - USGS Alluvium Carbonate rock Clastic rock Conglomerate Gneiss Granite Granodiorite Migmatite Phyllite Porphyry Rhyolite Sandstone Tuff Volcanic rock none biotite Challis Magmatic Complex Challis Volcanic Group Dewey Mine geochemical data Geology, Geophysics, and Geochemistry Science Center GGGSC Gunsight Formation hydride generation hornblende hornblende-biotite lapili tuff Mineral Resources Program Missouri Ridge Formation MRP muscovite sulfides muscovite-biotite National Geochemical Database NGDB pebble conglomerate quartz rock chemistry rock drainage sediment chemistry Sunnyside tuff USGS Metadata Identifier USGS:61817ee5d34e9f2789e447df Geographic Names Information System (GNIS) Automatic Creek Beansnapper Creek Bear Creek Big Chief Creek Big Cottonwood Creek Cabin Creek Cache Creek Cane Creek Canyon Creek Colt Creek Cornish Creek Cultus Creek East Fork Indian Creek East Fork South Fork Salmon River East Fork Trail Creek Forty-five Creek Glass Mountain Indian Creek Little Indian Creek Little Loon Creek Little Pistol Creek Loon Creek Luger Creek Marble Creek Mearney Creek Middle Fork Indian Creek Middle Fork Salmon River North Fork Porphyry Creek North Fork Wolf Fang Creek Pistol Creek Poee Creek Porphyry Creek Profile Creek Pungo Creek Rapid River Ryan Creek Shrapnel Creek Silver Plume South Fork Salmon River South Fork Wolf Fang Creek Spring Creek Springfield Creek Sugar Creek Tamarack Creek Thirty-two Creek Trail Creek Trigger Creek Twenty-five Creek West Fork Little Loon Creek West Fork Trail Creek Wolf Fang Creek Common geographic areas Colorado Idaho United States Upper Middle Fork Salmon River none East Fork Springfield Creek Frank Church - River of No Return Wilderness Area Idaho Primitive Area Middle Fork terraces Salmon Rivers Breaks Primitive Area Thunder Mountain Caldera Unnamed Minor Tributary Unnamed Tributary USA None. Please see "Distribution Info" for details. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. LaDonna M Choate ROCKY MOUNTAIN REGION: GEOLOGY, GEOPHYSICS, and GEOCHEMISTRY SCIENCE CENTER mailing and physical

Mail Stop 964D, W 6th Ave Kipling St

Denver CO 80225 US 303-236-1241 lchoate@usgs.gov The chemical data of this data set represent analyses of rock and sediment samples collected in support of mineral deposit research projects of the U.S. Geological Survey (USGS). Attribute fields and values were reviewed and checked for accuracy and consistency of terms. All analytical values are within a reasonably expected range. This data set was derived from rock and sediment samples collected by U.S. Geological Survey (USGS) and chemically analyzed by AGAT laboratories contracted by the USGS. The samples in this data set were reanalyzed for major, and trace elements. All samples were subject to the same sample preparation protocol and same analytical protocols. The samples have been analyzed using documented techniques. The following criteria were chosen for selecting data for the sample data set: Each sample must have a unique identifying number, LAB_ID. Each sample must have a latitude and longitude. Each sample must be identified as a rock or sediment. Each analytical determination must be linked to a unique identifying number, LAB_ID. Each analytical determination must be identified by analyte type. This data set provides the chemical reanalyses of 23 rock and 85 sediment samples for Ag, Al, As, B, Ba, Be, Bi, Ca, Cd, Ce, Co, Cr, Cs, Cu, Dy, Er, Eu, Fe, Ga, Gd, Ge, Hf, Ho, In, K, La, Li, Lu, Mg, Mn, Mo, Nb, Nd, Ni, P, Pb, Pr, Rb, Re, S, Sb, Sc, Se, Si, Sm, Sn, Sr, Ta, Tb, Te, Th, Ti, Tl, Tm, U, V, W, Y, Yb, Zn, and Zr. Boron and rhenium values are provided as informational or provisional data. The data set provides brief descriptive information for each sample. Site locations are a repeat of reference found in the Oracle-based National Geochemical Database (NGDB) maintained by the USGS: National Geochemical Database (usgs.gov). Positional accuracy can be estimated as accurate to the nearest second (30.9 meters latitude and 21.9 meters longitude at 45 degrees latitude). The coordinates in the dataset are presented in decimal degrees to the nearest 1/10000 of a degree (0.0001), accurate to 11.1 meters latitude and 7.9 meters longitude at 45 degrees latitude. Most field maps used by the USGS on which these sample location points were plotted were USGS topographic maps that used NAD27 (1927 North American datum) based on the Clarke 1866 ellipsoid. No formal positional accuracy tests were conducted. These data were generated by AGAT laboratories contracted by the U.S. Geological Survey (USGS); Geology, Geophysics, and Geochemistry Science Center (GGGSC). Upon completion of the chemical analysis, a quality control analysis of the results was conducted by USGS GGGSC personnel. The final, approved data were stored in the GGGSC Oracle-based Laboratory Information Management System and the Oracle-based National Geochemical Database (NGDB) maintained by the USGS. Analytical data associated with these samples were derived using the following criteria: 1) Each analytical determination must be linked to a valid and unique sample lab number; and 2) each analytical determination must be identified by analyte. To determine the concentrations of major and trace elements in the rock and sediment samples, several analytical methods were used, as follows: Sixty elements were measured by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS). Samples were fused at 750-degree Celsius with sodium peroxide and the fusion cake dissolved in a dilute nitric acid. The resulting solution was analyzed by ICP-OES and/or ICP-MS. Calibration on the ICP-OES and ICP-MS was performed by standardizing with digested rock reference materials and a series of multi-element solution standards. The ICP-OES and ICP-MS were calibrated with aqueous standards. Internal standards were used to compensate for matrix affects and internal drifts. Analytical Performance: Data were deemed acceptable if recovery for elements was +/-15 percent at five times the limit of detection and the calculated relative standard deviation of duplicate sample was no greater than 15 percent. The resolution for reported values by these instrumental methods range from zero to two decimal places. The stated minimum and maximum have the correct number of decimal places for each element. Arsenic was determined in geologic materials by hydride generation atomic absorption spectrometry (HGAAS). Samples were fused at 750-degree Celsius with sodium peroxide and the fusion cake dissolved in a dilute nitric acid. The sample solution is reduced with a sodium borohydride solution to generate a volatile hydride for analysis by atomic absorption spectroscopy. The reporting limit for Arsenic was 0.5 to 300 parts per million (ppm). Analytical Performance: Data were deemed acceptable if recovery of Arsenic was +/-20 percent at five times the lower limit of determination and the calculated relative standard deviation of duplicate samples was no greater than 20 percent. The resolution for reported values by this instrumental method is one decimal place. 2021 Site locations are a repeat of reference found in the Oracle-based National Geochemical Database (NGDB) maintained by the USGS: National Geochemical Database (usgs.gov) Point 0.0001 0.0001 Decimal degrees North American Datum of 1927 (NAD27) Clarke 1866 6378206.4 294.978698214 ROCK_MF_SF_SalmonRiver Table of descriptive attributes and geochemical analyses of 23 rock samples from the Middle Fork and South Fork of the Salmon River, Idaho Primitive Area. U.S. Geological Survey LAB_ID Unique identifier assigned to each submitted sample by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center Laboratory Information Management System U.S. Geological Survey Values composed of letters and numbers without further scientific significance PREVIOUS_LAB_ID The original sample identifier in the NDGB U.S. Geological Survey Values composed of letters and numbers without further scientific significance Location_Description Description of the location where the rock sample was collected U.S. Geological Survey Brief description of the location in the watershed where the rock sample was collected Rock_Source Description of the rock source that is represented by the sample U.S. Geological Survey Brief description of the rock source that is represented by the sample Latitude_NAD27 Latitude (North) location of the sample site using a datum of NAD27, to a resolution of four decimal places U.S. Geological Survey 44.2196 45.4692 Decimal degrees Longitude_NAD27 Longitude (West) location of the sample site using a datum of NAD27, to a resolution of four decimal places U.S. Geological Survey -115.4043 -114.7844 Decimal degrees As_ppm_HGAAS Arsenic, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by hydride generation atomic absorption spectrometry (HGAAS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 612 parts per million Al_pct_ICPOES_MS Aluminum, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.12 11.4 weight percent Ca_pct_ICPOES_MS Calcium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.04 6.59 weight percent Fe_pct_ICPOES_MS Iron, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.36 14.5 weight percent K_pct_ICPOES_MS Potassium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.01 4.90 weight percent Mg_pct_ICPOES_MS Magnesium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.02 4.28 weight percent P_pct_ICPOES_MS Phosphorus, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 0.92 weight percent S_pct_ICPOES_MS Sulphur, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 11.4 weight percent Si_pct_ICPOES_MS Silicon, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 15.8 45.1 weight percent Ti_pct_ICPOES_MS Titanium, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 0.99 weight percent Ag_ppm_ICPOES_MS Silver, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 988 parts per million As_ppm_ICPOES_MS Arsenic, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 517 parts per million B_ppm_ICPOES_MS_Informational Boron, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 76 parts per million Ba_ppm_ICPOES_MS Barium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 13.6 1640 parts per million Be_ppm_ICPOES_MS Beryllium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 5 parts per million Bi_ppm_ICPOES_MS Bismuth, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 86 parts per million Cd_ppm_ICPOES_MS Cadmium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 52.1 parts per million Ce_ppm_ICPOES_MS Cerium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.4 639 parts per million Co_ppm_ICPOES_MS Cobalt, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 28.1 parts per million Cr_ppm_ICPOES_MS Chromium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 150 parts per million Cs_ppm_ICPOES_MS Cesium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 29.9 parts per million Cu_ppm_ICPOES_MS Copper, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 85400 parts per million Dy_ppm_ICPOES_MS Dysprosium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.36 14.1 parts per million Er_ppm_ICPOES_MS Erbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.20 9.44 parts per million Eu_ppm_ICPOES_MS Europium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.08 4.07 parts per million Ga_ppm_ICPOES_MS Gallium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.18 31.6 parts per million Gd_ppm_ICPOES_MS Gadolinium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.17 22.2 parts per million Ge_ppm_ICPOES_MS Germanium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 11 parts per million Hf_ppm_ICPOES_MS Hafnium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 36 parts per million Ho_ppm_ICPOES_MS Holmium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.08 2.90 parts per million In_ppm_ICPOES_MS Indium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 2.0 parts per million La_ppm_ICPOES_MS Lanthanum, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.3 341 parts per million Li_ppm_ICPOES_MS Lithium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 206 parts per million Lu_ppm_ICPOES_MS Lutetium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 1.13 parts per million Mn_ppm_ICPOES_MS Manganese, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 62 6430 parts per million Mo_ppm_ICPOES_MS Molybdenum, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -2 12 parts per million Nb_ppm_ICPOES_MS Niobium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.1 78.2 parts per million Nd_ppm_ICPOES_MS Neodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 187 parts per million Ni_ppm_ICPOES_MS Nickel, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 7 87 parts per million Pb_ppm_ICPOES_MS Lead, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 210000 parts per million Pr_ppm_ICPOES_MS Praseodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.05 61.3 parts per million Rb_ppm_ICPOES_MS Rubidium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.80 212 parts per million Re_ppm_ICPOES_MS_Informational Rhenium, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.02 -0.02 parts per million Sb_ppm_ICPOES_MS Antimony, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 1580 parts per million Sc_ppm_ICPOES_MS Scandium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 29 parts per million Se_ppm_ICPOES_MS Selenium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 96 parts per million Sm_ppm_ICPOES_MS Samarium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 24.9 parts per million Sn_ppm_ICPOES_MS Tin, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 12 parts per million Sr_ppm_ICPOES_MS Strontium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 5.4 637 parts per million Ta_ppm_ICPOES_MS Tantalum, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 5.9 parts per million Tb_ppm_ICPOES_MS Terbium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 2.63 parts per million Te_ppm_ICPOES_MS Tellurium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 -0.5 parts per million Th_ppm_ICPOES_MS Thorium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.1 117 parts per million Tl_ppm_ICPOES_MS Thallium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 3.7 parts per million Tm_ppm_ICPOES_MS Thulium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 1.23 parts per million U_ppm_ICPOES_MS Uranium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.33 24.0 parts per million V_ppm_ICPOES_MS Vanadium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 248 parts per million W_ppm_ICPOES_MS Tungsten, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 30 parts per million Y_ppm_ICPOES_MS Yttrium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.0 123 parts per million Yb_ppm_ICPOES_MS Ytterbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 7.8 parts per million Zn_ppm_ICPOES_MS Zinc, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 6 12900 parts per million Zr_ppm_ICPOES_MS Zircon, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.7 1510 parts per million ROCK_QAQC_MF_SF_SalmonRiver Table of descriptive attributes and geochemical analyses of standard reference materials submitted with rock samples from the Middle Fork and South Fork of the Salmon River, Idaho Primitive Area. U.S. Geological Survey LAB_ID Unique identifier assigned to each submitted sample by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center Laboratory Information Management System U.S. Geological Survey Values composed of letters and numbers without further scientific significance Reference_Material Unique sample identifier assigned to standard reference material by the producer Producer defined Values composed of letters and numbers without further scientific significance Description Description of the standard reference material Producer defined Brief description of the standard reference material As_ppm_HGAAS Arsenic, in parts per million (ppm). Analyses by hydride generation atomic absorption spectrometry (HGAAS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.4 3.7 parts per million Al_pct_ICPOES_MS Aluminum, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 7.48 7.95 weight percent Ca_pct_ICPOES_MS Calcium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.89 1.52 weight percent Fe_pct_ICPOES_MS Iron, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.34 3.49 weight percent K_pct_ICPOES_MS Potassium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 3.74 4.57 weight percent Mg_pct_ICPOES_MS Magnesium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.16 0.56 weight percent P_pct_ICPOES_MS Phosphorus, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.03 0.14 weight percent S_pct_ICPOES_MS Sulphur, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 -0.1 weight percent Si_pct_ICPOES_MS Silicon, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 31.7 36.4 weight percent Ti_pct_ICPOES_MS Titanium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.16 0.40 weight percent Ag_ppm_ICPOES_MS Silver, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 -1 parts per million As_ppm_ICPOES_MS Arsenic, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 8 parts per million B_ppm_ICPOES_MS_Informational Boron, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 30 parts per million Ba_ppm_ICPOES_MS Barium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 834 1350 parts per million Be_ppm_ICPOES_MS Beryllium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 -5 parts per million Bi_ppm_ICPOES_MS Bismuth, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 0.3 parts per million Cd_ppm_ICPOES_MS Cadmium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 -0.2 parts per million Ce_ppm_ICPOES_MS Cerium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 52.3 465 parts per million Co_ppm_ICPOES_MS Cobalt, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.4 7.8 parts per million Cr_ppm_ICPOES_MS Chromium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 13 24 parts per million Cs_ppm_ICPOES_MS Cesium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.1 10.5 parts per million Cu_ppm_ICPOES_MS Copper, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 10 43 parts per million Dy_ppm_ICPOES_MS Dysprosium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 4.19 6.09 parts per million Er_ppm_ICPOES_MS Erbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.33 2.42 parts per million Eu_ppm_ICPOES_MS Europium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.66 2.39 parts per million Ga_ppm_ICPOES_MS Gallium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 17.1 25.8 parts per million Gd_ppm_ICPOES_MS Gadolinium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 4.47 16.5 parts per million Ge_ppm_ICPOES_MS Germanium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1 2 parts per million Hf_ppm_ICPOES_MS Hafnium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 6 16 parts per million Ho_ppm_ICPOES_MS Holmium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.84 1.02 parts per million In_ppm_ICPOES_MS Indium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 -0.2 parts per million La_ppm_ICPOES_MS Lanthanum, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 25.5 185 parts per million Li_ppm_ICPOES_MS Lithium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 35 61 parts per million Lu_ppm_ICPOES_MS Lutetium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.24 0.39 parts per million Mn_ppm_ICPOES_MS Manganese, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 286 323 parts per million Mo_ppm_ICPOES_MS Molybdenum, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2 2 parts per million Nb_ppm_ICPOES_MS Niobium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 8.4 24.8 parts per million Nd_ppm_ICPOES_MS Neodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 19.8 215 parts per million Ni_ppm_ICPOES_MS Nickel, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 21 24 parts per million Pb_ppm_ICPOES_MS Lead, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 31 52 parts per million Pr_ppm_ICPOES_MS Praseodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 5.67 57.8 parts per million Rb_ppm_ICPOES_MS Rubidium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 160 264 parts per million Re_ppm_ICPOES_MS_Informational Rhenium, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.02 -0.02 parts per million Sb_ppm_ICPOES_MS Antimony, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.4 1.3 parts per million Sc_ppm_ICPOES_MS Scandium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 7 parts per million Se_ppm_ICPOES_MS Selenium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 -5 parts per million Sm_ppm_ICPOES_MS Samarium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 4.2 27.4 parts per million Sn_ppm_ICPOES_MS Tin, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 4 8 parts per million Sr_ppm_ICPOES_MS Strontium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 109 243 parts per million Ta_ppm_ICPOES_MS Tantalum, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.6 0.7 parts per million Tb_ppm_ICPOES_MS Terbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.65 1.85 parts per million Te_ppm_ICPOES_MS Tellurium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 -0.5 parts per million Th_ppm_ICPOES_MS Thorium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 15.4 114 parts per million Tl_ppm_ICPOES_MS Thallium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.1 1.5 parts per million Tm_ppm_ICPOES_MS Thulium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.32 0.37 parts per million U_ppm_ICPOES_MS Uranium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.50 6.10 parts per million V_ppm_ICPOES_MS Vanadium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 10 49 parts per million W_ppm_ICPOES_MS Tungsten, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 2 parts per million Y_ppm_ICPOES_MS Yttrium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 21.1 24.6 parts per million Yb_ppm_ICPOES_MS Ytterbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.8 2.8 parts per million Zn_ppm_ICPOES_MS Zinc, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 29 119 parts per million Zr_ppm_ICPOES_MS Zircon, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 235 616 parts per million SEDIMENT_MF_SF_SalmonRiver Table of descriptive attributes and geochemical analyses of 85 sediment samples from the Middle Fork and South Fork of the Salmon River, Idaho Primitive Area. U.S. Geological Survey LAB_ID Unique identifier assigned to each submitted sample by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center Laboratory Information Management System U.S. Geological Survey Values composed of letters and numbers without further scientific significance PREVIOUS_LAB_ID The original identifier in the NDGB U.S. Geological Survey Values composed of letters and numbers without further scientific significance Location_Description Description of the location where the sediment sample was collected U.S. Geological Survey Brief description of the location in the watershed where the sediment sample was collected Source_Material Description of the source that is represented by the sample U.S. Geological Survey Brief description of the source that is represented by the sample Latitude_NAD27 Latitude (North) location of the sample site using a datum of NAD27, to a resolution of four decimal places U.S. Geological Survey 44.6163 45.2705 Decimal degrees Longitude_NAD27 Longitude (West) location of the sample site using a datum of NAD27, to a resolution of four decimal places. U.S. Geological Survey -115.4718 -114.7182 Decimal degrees As_ppm_HGAAS Arsenic, in parts per million (ppm). Analyses by hydride generation atomic absorption spectrometry (HGAAS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.1 686 parts per million Al_pct_ICPOES_MS Aluminum, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.44 8.74 weight percent Ca_pct_ICPOES_MS Calcium, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 3.73 weight percent Fe_pct_ICPOES_MS Iron, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.30 6.90 weight percent K_pct_ICPOES_MS Potassium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.02 4.53 weight percent Mg_pct_ICPOES_MS Magnesium, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 5.53 weight percent P_pct_ICPOES_MS Phosphorus, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 0.22 weight percent S_pct_ICPOES_MS Sulphur, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 0.1 weight percent Si_pct_ICPOES_MS Silicon, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 16.5 46.5 weight percent Ti_pct_ICPOES_MS Titanium, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 1.01 weight percent Ag_ppm_ICPOES_MS Silver, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 6 parts per million As_ppm_ICPOES_MS Arsenic, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 659 parts per million B_ppm_ICPOES_MS_Informational Boron, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 125 parts per million Ba_ppm_ICPOES_MS Barium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 8.3 1350 parts per million Be_ppm_ICPOES_MS Beryllium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 17 parts per million Bi_ppm_ICPOES_MS Bismuth, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 2.4 parts per million Cd_ppm_ICPOES_MS Cadmium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 8.0 parts per million Ce_ppm_ICPOES_MS Cerium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.4 706 parts per million Co_ppm_ICPOES_MS Cobalt, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 34.2 parts per million Cr_ppm_ICPOES_MS Chromium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 342 parts per million Cs_ppm_ICPOES_MS Cesium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 21.0 parts per million Cu_ppm_ICPOES_MS Copper, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 63 parts per million Dy_ppm_ICPOES_MS Dysprosium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 43.1 parts per million Er_ppm_ICPOES_MS Erbium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 18.8 parts per million Eu_ppm_ICPOES_MS Europium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 5.33 parts per million Ga_ppm_ICPOES_MS Gallium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.09 43.6 parts per million Gd_ppm_ICPOES_MS Gadolinium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 62.0 parts per million Ge_ppm_ICPOES_MS Germanium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1 7 parts per million Hf_ppm_ICPOES_MS Hafnium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 27 parts per million Ho_ppm_ICPOES_MS Holmium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 7.38 parts per million In_ppm_ICPOES_MS Indium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 -0.2 parts per million La_ppm_ICPOES_MS Lanthanum, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.3 417 parts per million Li_ppm_ICPOES_MS Lithium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 65 parts per million Lu_ppm_ICPOES_MS Lutetium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 2.09 parts per million Mn_ppm_ICPOES_MS Manganese, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 36 2140 parts per million Mo_ppm_ICPOES_MS Molybdenum, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -2 245 parts per million Nb_ppm_ICPOES_MS Niobium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 77.1 parts per million Nd_ppm_ICPOES_MS Neodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 262 parts per million Ni_ppm_ICPOES_MS Nickel, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 7 150 parts per million Pb_ppm_ICPOES_MS Lead, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 205 parts per million Pr_ppm_ICPOES_MS Praseodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.05 70.7 parts per million Rb_ppm_ICPOES_MS Rubidium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.0 220 parts per million Re_ppm_ICPOES_MS_Informational Rhenium, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.02 -0.02 parts per million Sb_ppm_ICPOES_MS Antimony, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.4 429 parts per million Sc_ppm_ICPOES_MS Scandium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 21 parts per million Se_ppm_ICPOES_MS Selenium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 39 parts per million Sm_ppm_ICPOES_MS Samarium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 66.3 parts per million Sn_ppm_ICPOES_MS Tin, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 9 parts per million Sr_ppm_ICPOES_MS Strontium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.6 487 parts per million Ta_ppm_ICPOES_MS Tantalum, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 7.7 parts per million Tb_ppm_ICPOES_MS Terbium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 8.47 parts per million Te_ppm_ICPOES_MS Tellurium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 2.8 parts per million Th_ppm_ICPOES_MS Thorium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 71.6 parts per million Tl_ppm_ICPOES_MS Thallium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 4.1 parts per million Tm_ppm_ICPOES_MS Thulium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 2.31 parts per million U_ppm_ICPOES_MS Uranium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.05 141 parts per million V_ppm_ICPOES_MS Vanadium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 168 parts per million W_ppm_ICPOES_MS Tungsten, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 195 parts per million Y_ppm_ICPOES_MS Yttrium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 209 parts per million Yb_ppm_ICPOES_MS Ytterbium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 13.8 parts per million Zn_ppm_ICPOES_MS Zinc, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 3400 parts per million Zr_ppm_ICPOES_MS Zircon, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.9 1060 parts per million SEDIMENT_QAQC_MF_SF_SalmonRiver Table of descriptive attributes and geochemical analyses of standard reference materials submitted with sediment samples from the Middle Fork and South Fork of the Salmon River, Idaho Primitive Area. U.S. Geological Survey LAB_ID Unique identifier assigned to each submitted sample by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center Laboratory Information Management System U.S. Geological Survey Values composed of letters and numbers without further scientific significance Reference_Material Unique sample identifier assigned to standard reference material by the producer Producer defined Values composed of letters and numbers without further scientific significance Description Description of the standard reference material Producer defined Brief description of the standard reference material As_ppm_HGAAS Arsenic, in parts per million (ppm). Analyses by hydride generation atomic absorption spectrometry (HGAAS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.5 208 parts per million Al_pct_ICPOES_MS Aluminum, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 3.96 7.86 weight percent Ca_pct_ICPOES_MS Calcium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.12 3.25 weight percent Fe_pct_ICPOES_MS Iron, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.49 5.00 weight percent K_pct_ICPOES_MS Potassium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.95 2.69 weight percent Mg_pct_ICPOES_MS Magnesium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.14 2.47 weight percent P_pct_ICPOES_MS Phosphorus, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.01 0.14 weight percent S_pct_ICPOES_MS Sulphur, in weight percent (pct). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.1 0.4 weight percent Si_pct_ICPOES_MS Silicon, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 27.9 39.5 weight percent Ti_pct_ICPOES_MS Titanium, in weight percent (pct). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.21 0.57 weight percent Ag_ppm_ICPOES_MS Silver, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 3 parts per million As_ppm_ICPOES_MS Arsenic, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 192 parts per million B_ppm_ICPOES_MS_Informational Boron, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -10 215 parts per million Ba_ppm_ICPOES_MS Barium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 243 917 parts per million Be_ppm_ICPOES_MS Beryllium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 32 parts per million Bi_ppm_ICPOES_MS Bismuth, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.2 54.7 parts per million Cd_ppm_ICPOES_MS Cadmium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 4.2 parts per million Ce_ppm_ICPOES_MS Cerium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 52.1 81.4 parts per million Co_ppm_ICPOES_MS Cobalt, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 3.3 27.6 parts per million Cr_ppm_ICPOES_MS Chromium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 13 214 parts per million Cs_ppm_ICPOES_MS Cesium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 3.6 18.0 parts per million Cu_ppm_ICPOES_MS Copper, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 409 parts per million Dy_ppm_ICPOES_MS Dysprosium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 3.21 7.85 parts per million Er_ppm_ICPOES_MS Erbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.02 4.98 parts per million Eu_ppm_ICPOES_MS Europium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.42 1.98 parts per million Ga_ppm_ICPOES_MS Gallium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 12.4 25.9 parts per million Gd_ppm_ICPOES_MS Gadolinium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.81 5.76 parts per million Ge_ppm_ICPOES_MS Germanium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1 3 parts per million Hf_ppm_ICPOES_MS Hafnium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 4 13 parts per million Ho_ppm_ICPOES_MS Holmium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.64 1.65 parts per million In_ppm_ICPOES_MS Indium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.2 1.7 parts per million La_ppm_ICPOES_MS Lanthanum, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 25.5 37.4 parts per million Li_ppm_ICPOES_MS Lithium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 12 113 parts per million Lu_ppm_ICPOES_MS Lutetium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.29 0.78 parts per million Mn_ppm_ICPOES_MS Manganese, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 323 2490 parts per million Mo_ppm_ICPOES_MS Molybdenum, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -2 9 parts per million Nb_ppm_ICPOES_MS Niobium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 9.2 35.9 parts per million Nd_ppm_ICPOES_MS Neodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 18.6 37.3 parts per million Ni_ppm_ICPOES_MS Nickel, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 15 87 parts per million Pb_ppm_ICPOES_MS Lead, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 24 653 parts per million Pr_ppm_ICPOES_MS Praseodymium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 5.79 9.86 parts per million Rb_ppm_ICPOES_MS Rubidium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 98.9 424 parts per million Re_ppm_ICPOES_MS_Informational Rhenium, in parts per million (ppm), for informational purpose only. Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.02 -0.02 parts per million Sb_ppm_ICPOES_MS Antimony, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.4 16.5 parts per million Sc_ppm_ICPOES_MS Scandium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 5 17 parts per million Se_ppm_ICPOES_MS Selenium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -5 9 parts per million Sm_ppm_ICPOES_MS Samarium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 3.4 7.3 parts per million Sn_ppm_ICPOES_MS Tin, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2 401 parts per million Sr_ppm_ICPOES_MS Strontium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 29.4 529 parts per million Ta_ppm_ICPOES_MS Tantalum, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 6.1 parts per million Tb_ppm_ICPOES_MS Terbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.47 1.15 parts per million Te_ppm_ICPOES_MS Tellurium, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -0.5 -0.5 parts per million Th_ppm_ICPOES_MS Thorium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 8.7 30.7 parts per million Tl_ppm_ICPOES_MS Thallium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.8 3.1 parts per million Tm_ppm_ICPOES_MS Thulium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 0.29 0.82 parts per million U_ppm_ICPOES_MS Uranium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 2.49 9.86 parts per million V_ppm_ICPOES_MS Vanadium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 23 144 parts per million W_ppm_ICPOES_MS Tungsten, in parts per million (ppm). Negative values indicate determinations less than the detection limit of the analytical method; the absolute value of the negative number is the lower limit of determination. Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey -1 139 parts per million Y_ppm_ICPOES_MS Yttrium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 17.0 46.0 parts per million Yb_ppm_ICPOES_MS Ytterbium, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 1.8 5.7 parts per million Zn_ppm_ICPOES_MS Zinc, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 39 430 parts per million Zr_ppm_ICPOES_MS Zircon, in parts per million (ppm). Analyses by inductively coupled plasma-optical emission spectrometry (ICP-OES) and/or inductively coupled plasma-mass spectrometry (ICP-MS) after sodium peroxide fusion digestion. U.S. Geological Survey 169 539 parts per million GS ScienceBase U.S. Geological Survey mailing and physical

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