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Spectra Used in Figures This dataset contains reflectance and transmission spectra of unexpanded and expanded vermiculite ore, and handpicked flakes of phlogopite, hydrobiotite, and vermiculite. These samples were collected from mines near Enoree, South Carolina; Libby, Montana; Louisa, Virginia; Palabora, Llano, Texas; and South Africa. Spectra are identified as either reflectance or transmission in the alphanumeric file names and correlate to specpr record numbers designated in the manuscript figures in which they are shown. These transmission spectra were converted to absorbance in many of the figures. Spectra of talc, fibrous richterite amphibole, and serpentine are from well characterized samples from Feiser Mine, Ruby Mountains,... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CGGSC, CMERSC, Central Minerals and Environmental Resources Science Center, China, Crustal Geophysics and Geochemistry Science Center, All tags... Enoree, Jiangsu, Libby, Libby, Louisa, MRP, Mineral Resources Program, Montana, Palabora, South Africa, South Carolina, VSPEC technique, Vermiculite insulation, Virginia, chemical analysis, electron probe microanalysis, electron probe microanalysis, elongate amphiboles, environment, expanded vermiculite, geoscientificInformation, mineral deposits, mineralogy, provenance, reflectance spectroscopy, scanning electron microscopy, spectroscopy, x-ray diffraction, Fewer tags Airborne electromagnetic and magnetic survey data and inverted resistivity models, western Yukon Flats, Alaska, February 2016 Airborne electromagnetic (AEM) and magnetic survey data were collected during February 2016 along 300 line kilometers in the western Yukon Flats near Stevens Village, Alaska. Data were acquired with the CGG RESOLVE frequency-domain helicopter-borne electromagnetic systems together with a Scintrex Cesium Vapour CS-3 magnetometer. The AEM average depth of investigation is about 100 m. The survey was flown at a nominal flight height of 30 m above terrain along widely spaced reconnaissance lines. This data release includes raw and processed AEM data and laterally-constrained inverted resistivity depth sections along all flight lines. This release also includes unprocessed and processed magnetic data that has been drift... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska Division of Geological and Geophysical Surveys, CGGSC, Crustal Geophysics and Geochemistry Science Center, Geophysics, NASA ABoVE, All tags... USGS Science Data Catalog (SDC), aeromagnetic surveying, electromagnetic surveying, environment, geophysics, geoscientificInformation, geospatial datasets, permafrost, resistivity, Fewer tags Table of Electron Probe Microanalyses of Vermiculite Samples This dataset contains results from electron microprobe analyses for expanded and unexpanded vermiculite samples. These data are provide for samples of vermiculite ore, expanded vermiculite insulation, horticultural products, aggregate, and packing materials derived from mines near Enoree, South Carolina; Libby, Montana; Louisa, Virginia; Palabora, South Africa; Jiangsu, China; and Llano, Texas. An ASCII text file of results is provided in comma-separated by value (csv) format. The file has the name “vermiculite_probe_microanalyses_data.csv”. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CGGSC, CMERSC, Central Minerals and Environmental Resources Science Center, China, Crustal Geophysics and Geochemistry Science Center, All tags... Enoree, Jiangsu, Libby, Libby, Louisa, MRP, Mineral Resources Program, Montana, Palabora, South Africa, South Carolina, VSPEC technique, Vermiculite insulation, Virginia, chemical analysis, electron probe microanalysis, electron probe microanalysis, elongate amphiboles, environment, expanded vermiculite, geoscientificInformation, mineral deposits, mineralogy, provenance, reflectance spectroscopy, scanning electron microscopy, spectroscopy, x-ray diffraction, Fewer tags Airborne electromagnetic inverted resistivity models, Western Yukon Flats, Alaska, February 2016 Airborne electromagnetic (AEM) and magnetic survey data were collected during February 2016 along 300 line kilometers in the western Yukon Flats near Stevens Village, Alaska. Data were acquired with the CGG RESOLVE frequency-domain helicopter-borne electromagnetic systems together with a Scintrex Cesium Vapour CS-3 magnetometer. The AEM average depth of investigation is about 100 m. The survey was flown at a nominal flight height of 30 m above terrain along widely spaced reconnaissance lines. This data release includes raw and processed AEM data and laterally-constrained inverted resistivity depth sections along all flight lines. This release also includes unprocessed and processed magnetic data that has been drift... Categories: Data; Tags: Alaska, Alaska Division of Geological and Geophysical Surveys, CGGSC, Crustal Geophysics and Geochemistry Science Center, NASA ABoVE, All tags... Stevens Village, Yukon Flats, aeromagnetic surveying, electromagnetic surveying, environment, geophysics, geoscientificInformation, geospatial datasets, permafrost, resistivity, Fewer tags Magnetotelluric sounding data, stations 26 to 36, north of Wells, Nevada, 2005 This dataset includes the magnetotelluric (MT) sounding data collected in 2005 along an east-west profile north of Wells, Nevada. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S. Geological... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bishop Creek, CGGSC, Crustal Geophysics and Geochemistry Science Center, Electromagnetic surveying, Elko County, All tags... GPS measurement, Geophysics, Geophysics, Gold Deposits, Gold Mining, Humboldt River, MRP, MT, Magnetic field (earth), Magnetic surveying, Marys River, Mineral Resources Program, Montello, Nevada, North Fork Humboldt River, Northern Nevada Gold Province, Oasis, Snake Mountains, Tabor Creek, USGS Science Data Catalog (SDC), Wells, Wilkins, Windermere Hills, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags Magnetotelluric survey to characterize the Sunnyside Porphyry Copper System in the Patagonia Mountains, Arizona This dataset includes the magnetotelluric (MT) sounding data collected in 2008 in and near the Patagonia Mountains of Arizona. The U.S. Geological Survey (USGS) conducted a series of multidisciplinary studies as part of the Assessment Techniques for Concealed Mineral Resources project funded by the USGS Minerals Resources Program in cooperation with the U.S. Forest Service. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, CGGSC, Crustal Geophysics and Geochemistry Science Center, Cumero Canyon, Electromagnetic surveying, All tags... GIS, GPS measurement, Geophysics, Harshaw, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Mount Hughes, Patagonia, Patagonia Mountains, San Rafael Valley, San Rafael Valley porphyry copper system, Santa Cruz County, Sunnyside porphyry copper system, Time series, USGS Science Data Catalog (SDC), apparent resistivity, aquifer, geographic information systems, geoscientificinformation, geospatial dataset, groundwater, hydrogeology, impedance, impedance phase, impedance strike, magnetotelluric, sounding, tipper, Fewer tags Airborne electromagnetic and magnetic survey data, Western Yukon Flats, Alaska, February 2016 Airborne electromagnetic (AEM) and magnetic survey data were collected during February 2016 along 300 line kilometers in the western Yukon Flats near Stevens Village, Alaska. Data were acquired with the CGG RESOLVE frequency-domain helicopter-borne electromagnetic systems together with a Scintrex Cesium Vapour CS-3 magnetometer. The AEM average depth of investigation is about 100 m. The survey was flown at a nominal flight height of 30 m above terrain along widely spaced reconnaissance lines. This data release includes raw and processed AEM data and laterally-constrained inverted resistivity depth sections along all flight lines. This release also includes unprocessed and processed magnetic data that has been drift... Categories: Data; Tags: Alaska Division of Geological and Geophysical Surveys, CGGSC, Crustal Geophysics and Geochemistry Science Center, NASA ABoVE, aeromagnetic surveying, All tags... electromagnetic surveying, environment, geophysics, geoscientificInformation, geospatial datasets, permafrost, resistivity, Fewer tags Thickness of unconsolidated sediments for the USGS National Crustal Model We present a numeric grid containing estimates of the thickness of unconsolidated sediments for the western United States. Values for these grids were combined and integrated from previous studies or derived directly from gravity analyses. The grids are provided with 1-km grid-node spacing in WGS84 latitude-longitude coordinates. Detailed information regarding the derivation of these estimates is provided by Shah, A.K, and Boyd, O.S., 2018, Depth to basement and thickness of unconsolidated sediments for the western United States - Initial estimates for layers of the U.S. Geological Survey National Crustal Model: U.S. Geological Survey Open-File Report 2018-1115, https://doi.org/10.3133/ofr20181115. Categories: Data; Tags: Arizona, CGGSC, California, Colorado, GHSC, All tags... Geologic Hazards Science Center, Geology, Geophysics, and Geochemistry Science Center, Idaho, Kansas, Montana, National Crustal Model, Nebraska (west), Nevada, New Mexico, North Dakota (west), Oklahoma (panhandle), Oregon, South Dakota (west), Texas (west), USGS Science Data Catalog (SDC), Washington, Western United States, Wyoming, basins, earthquake response, earthquakes, geoscientificInformation, gravity, hazards, regional study, sediments, three-dimensional mapping, unconsolidated sediments, Fewer tags Airborne magnetic and radiometric survey, Ironton, Missouri area This publication provides digital flight line data for a high-resolution horizontal magnetic gradient and radiometric survey over the Ironton, Missouri area of southeast Missouri. Data were collected using a fixed wing aircraft with magnetometers mounted in the tail stinger and each wing tip pod and a fully calibrated gamma ray spectrometer. The survey operated out of the Farmington, Missouri airport during January to mid-February of 2016. The survey covers an irregularly shaped region within a 54 x 53 square-kilometer area centered on the town of Ironton, Missouri. Data were collected along north-south flight lines spaced 300 meters (m) apart with east-west tie lines flown every 3000 m. A mean terrain clearance... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: CGGSC, Cedar Hill, Crustal Geophysics and Geochemistry Science Center, Iron Mountain, Ironton, All tags... MRP, Mineral Resources Program, Missouri, Pilot Knob, Shepard Mountain, USGS Science Data Catalog (SDC), aeromagnetic surveying, aeroradiometric surveying, geophysics, geoscientificInformation, geospatial datasets, magnetic field (earth), magnetic surveying, Fewer tags Mössbauer Spectral Data of Vermiculite Ore Data are provide for four samples of unexpanded vermiculite ore from mines near Enoree, South Carolina; Libby, Montana; Louisa, Virginia; Palabora, and South Africa. ASCII text files listings of Mossbauer data for each sample are provided in comma-separated by value (csv) files. These files have the file naming structure sampleid_mossbauer_spectra.csv, where sampleid is a unique alphanumeric code for each sample. These samples were chosen as representative of the ores from their various mine sources, having documentation verifying that they were collected directly from their sources. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CGGSC, CMERSC, Central Minerals and Environmental Resources Science Center, China, Crustal Geophysics and Geochemistry Science Center, All tags... Enoree, Jiangsu, Libby, Libby, Louisa, MRP, Mineral Resources Program, Montana, Palabora, South Africa, South Carolina, VSPEC technique, Vermiculite insulation, Virginia, chemical analysis, electron probe microanalysis, electron probe microanalysis, elongate amphiboles, environment, expanded vermiculite, geoscientificInformation, mineral deposits, mineralogy, provenance, reflectance spectroscopy, scanning electron microscopy, spectroscopy, x-ray diffraction, Fewer tags Spectral Parameter Tables for Expanded Vermiculite Samples This dataset contains spectral parameters for absorption features found in reflectance spectra of expanded vermiculite samples. These data are provide for 52 samples of vermiculite attic insulation, horticultural products, aggregate, and packing materials derived from mines near Enoree, South Carolina; Libby, Montana; Louisa, Virginia; Palabora, South Africa; and Jiangsu, China collected from 2000 to 2016. Also included are two tables listing the spectral parameters for reflectance spectra of four expanded vermiculite samples selected to represent each of the four main historical sources of vermiculite (e.g., Libby, Montana; Enoree, South Carolina; Louisa, Virginia; and Palabora, South Africa) taken at normal spectral... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CGGSC, CMERSC, Central Minerals and Environmental Resources Science Center, China, Crustal Geophysics and Geochemistry Science Center, All tags... Enoree, Jiangsu, Libby, Libby, Louisa, MRP, Mineral Resources Program, Montana, Palabora, South Africa, South Carolina, VSPEC technique, Vermiculite insulation, Virginia, chemical analysis, electron probe microanalysis, electron probe microanalysis, elongate amphiboles, environment, expanded vermiculite, geoscientificInformation, mineral deposits, mineralogy, provenance, reflectance spectroscopy, scanning electron microscopy, spectroscopy, x-ray diffraction, Fewer tags Depth to Mesozoic basement for the USGS National Crustal Model We present a numeric grid containing estimates of the depth to the pre-Cenozoic basement for the western United States. Values for these grids were combined and integrated from previous studies or derived directly from gravity analyses. The grids are provided with 1-km grid-node spacing in WGS84 latitude-longitude coordinates. Detailed information regarding the derivation of these estimates is provided by Shah, A.K. and Boyd, O.S., 2018, Depth to basement and thickness of unconsolidated sediments for the western United States - Initial estimates for layers of the U.S. Geological Survey National Crustal Model: U.S. Geological Survey Open-File Report 2018-1115, https://doi.org/10.3133/ofr20181115. Categories: Data; Tags: Arizona, CGGSC, California, Colorado, GHSC, All tags... Geologic Hazards Science Center, Geology, Geophysics, and Geochemistry Science Center, Idaho, Montana, National Crustal Model, Nevada, New Mexico, Oregon, USGS Science Data Catalog (SDC), Washington, Western United States, Wyoming, basement, basins, depth to basement, earthquake response, earthquakes, geoscientificInformation, gravity, hazards, regional study, three-dimensional mapping, Fewer tags Magnetotelluric sounding data, stations 1 to 25, north eastern Nevada, 2003 This dataset includes the magnetotelluric (MT) sounding data collected in 2003 along a north-south profile west of Wendover, Nevada. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S.... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Antelope Range, Antelope Valley, Boone Spring Hills, CGGSC, Chin Creek, All tags... Crustal Geophysics and Geochemistry Science Center, Currie Hills, Dolly Varden Mountains, Electromagnetic surveying, Elko County, GPS measurement, Geophysics, Gold Deposits, Gold Mining, Goshute Reservation, Goshute Valley, Great Basin, Great Basin National Park, Humboldt National Forest, Kern Mountains, Little Valley, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Montello, Murdock Mountain, Negro Creek, Nevada, Northern Nevada Gold Province, Pequop Mountains, Red Hills, Robbers Roost Basin, Schell Creek Range, Six Mile Creek, Snake Mountains, Spring Creek, Spring Valley, Toano Range, USGS Science Data Catalog (SDC), Wells, West Wendover, White Cloud Mountain, White Horse Flats, White Horse Mountain, White Pine County, apparent resistivity, aquifer, geoscientificinformation, impedance, impedance phase, impedance strike, magnetotelluric, sounding, suture zone, tipper, Fewer tags Spectra of Expanded Vermiculite Samples This dataset contains descriptions and analytical data (i.e., electron microprobe, X-ray diffraction, spectral reflectance, and scanning electron microprobe analyses) for expanded vermiculite samples. These data are provided for 52 samples of vermiculite attic insulation, horticultural products, aggregate, and packing materials derived from mines near Enoree, South Carolina; Libby, Montana; Louisa, Virginia; Palabora, South Africa; and Jiangsu, China collected from 2000 to 2016. Tables of electron microprobe and spectral absorption information are also included along with ascii listings of spectral reflectance for each sample. Some of these samples, particularly the ones from Libby, Montana contain bundles of elongate... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CGGSC, CMERSC, Central Minerals and Environmental Resources Science Center, China, Crustal Geophysics and Geochemistry Science Center, All tags... Enoree, Jiangsu, Libby, Libby, Louisa, MRP, Mineral Resources Program, Montana, Palabora, South Africa, South Carolina, VSPEC technique, Vermiculite insulation, Virginia, chemical analysis, electron probe microanalysis, electron probe microanalysis, elongate amphiboles, environment, expanded vermiculite, geoscientificInformation, mineral deposits, mineralogy, provenance, reflectance spectroscopy, scanning electron microscopy, spectroscopy, x-ray diffraction, Fewer tags Magnetotelluric sounding data, stations 1 to 12, East-Central Tooele County, Utah, 2003 This dataset includes the magnetotelluric (MT) sounding data collected in 2003 along a north-south profile west of Tooele, Utah. It is important to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province. It is also important to know the location and orientation of the Archean/Proterozoic suture zone between these provinces as well as major basement structures within these terranes because they may influence subsequent patterns of sedimentation, deformation, magmatism, and hydrothermal activity. This study was funded by the U.S. Geological... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Archean Wyoming craton, CGGSC, Cedar Mountains, Crustal Geophysics and Geochemistry Science Center, Dugway Proving Grounds, All tags... Electromagnetic surveying, GPS measurement, Geophysics, Gold Deposits, Gold Mining, Great Basin, Great Salt Lake, Great Salt Lake Desert, Juab County, Lakeside Mountains, Lakeside Valley, MRP, MT, Magnetic field (earth), Magnetic surveying, Mineral Resources Program, Mojave province, Northern Nevada Gold Province, Onaqui Mountains, Sheeprock Mountains, Simpson Mountains, Skull Valley, Skull Valley Reservation, Stansbury Mountains, Tooele, Tooele Army Depot, Tooele County, USGS Science Data Catalog (SDC), Uinta National Forest, Utah, Utah Test and Training Range, Vernon, Wasatch National Forest, apparent resistivity, aquifer, deformation, geoscientificinformation, hydrothermal activity, impedance, impedance phase, impedance strike, localized mineralization, magmatism, magnetotelluric, regional fluid flow, sedimentation, sounding, suture zone, tipper, Fewer tags Titanium concentrations in stream sediments from the Atlantic Coastal Plain of the southeastern U.S. (1975-1999) The titanium concentrations were obtained from a data set that is called the "National Geochemical Survey." This data set, as well as its documentation, are available in U.S. Geological Survey Open-File Report 2004-1001 (https://mrdata.usgs.gov/geochem/doc/home.htm). The titanium concentrations were measured in 3,457 samples of stream sediments from the coastal plain of the southeastern United States; this area includes parts of Virginia, North Carolina, South Carolina, Georgia, Florida, and Alabama. The samples were collected between 1975 and 1999 during several field surveys, and the concentrations were measured using inductively coupled plasma-atomic emission spectrometry. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Atlantic Coastal Plain, CGGSC, CMERSC, Central Minerals and Environmental Resources Science Center, All tags... Crustal Geophysics and Geochemistry Science Center, Florida, Geochemistry, Georgia, MRP, Mineral Resources Program, Mineralogy, North Carolina, South Carolina, USGS Science Data Catalog (SDC), Virginia, chemical analysis, chemical elements, geochemistry, geoscientificInformation, titanium, Fewer tags