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Geochemical data generated by projects funded by the USGS Earth Mapping Resources Initiative
Includes all geochemical data generated by each project partnership funded through Earth MRI and will be updated periodically as additional geochemical data from these projects becomes available. |
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Imaging spectrometer reflectance data, mineral predominance map, and white mica wavelength position map, Nabesna Quadrangle, Alaska
Reflectance, mineral predominance, and white mica wavelength position data calculated from an airborne hyperspectral imaging survey of this area using a HyMap sensor in 2014. Data are provided in a format generated by the ENVI software product, CSV, and GeoTiff. |
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Corescan Hyperspectral Core Imager, Mark III system data collected for the characterization of mineral resources near Nabesna, Alaska, 2014-2016
Hyperspectral analysis of rock samples using this equipment provide information on the composition and morphology of the minerals in the rock in microscopic detail. Data are provided as imagery in various formats. |
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Airborne imaging spectrometer data collected for characterizing mineral resources near Nabesna, Alaska, 2014
Flight-line data for a hyperspectral survey using the HyMap sensor over this area in 2014 where porphyry deposits are exposed. The data are provided in imagery formats. |
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Whole rock, soil, sediment, x-ray diffraction, and electron microprobe analyses of samples from the Orange Hill-Bond Creek area, Nabesna Quadrangle, Alaska
Geochemical, x-ray diffraction mineralogical, and electron probe microanalysis (EPMA) data on rocks, soils, and sediments collected near porphyry copper deposits in this area. Data are provided in CSV format. |
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Zircon Trace Element Data for Igneous Units Related to Mineralization in the Eastern Yukon-Tanana Upland and nearby areas, Eastern Alaska
Geochemical analyses of zircons in this area. Data are provided in CSV format. |
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Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021
GIS data that map potential for tungsten skarn mineralization in permissive tracts in the Yukon-Tanana Uplands, Eastern Alaska, along with tables listing keywords and procedures used to produce the permissive tracts and score them for mineral potential. Data are provided in Esri file geodatabase, shapefile, KML and CSV formats. |
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U-Pb zircon data for igneous units related to mineralization in the eastern Yukon-Tanana upland, eastern Alaska
Radiometric ages determined from analysis of zircon crystals in this area where mineral deposits are found. Data are provided in CSV format. |
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Whole rock geochemical data from the eastern part of the Yukon-Tanana Upland region, Alaska, USA
Whole rock chemistry on 185 samples, mostly from Au prospects, with lesser samples from porphyry Cu prospects in this area. Data are provided in CSV and shapefile formats. |
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U-Pb Isotopic Data and Ages of Zircon and Titanite from Rocks from the Yukon-Tanana Upland, Alaska
Uranium-lead isotopic data and crystallization ages of zircon and titanite from igneous, metamorphic, and sedimentary rocks collected from this area for geochronologic analysis. Data are provided in CSV format. |
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40Ar/39Ar Isotopic Data and Ages for Rocks from the Yukon-Tanana Upland of Eastern Alaska and the Northern Aleutian Range of South-Central Alaska
40Ar/39Ar isotopic data and ages for rocks from this area to support geological studies of the mineralization history of deposits in this area. Data are provided in CSV format. |
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Estimates of mineral abundances based on Rietveld refinement of X-ray diffraction data from mill tailings and other ore processing materials
Results of mineral abundance estimates based on Rietveld refinement of X-ray diffraction (XRD) analyses of mill tailings and other ore processing materials from worldwide localities. Data are provided in CSV format. |
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Electron microprobe data for monazite and xenotime used in consideration of gold deposit formation models
Electron microprobe geochemical data that is used to showcase differences in phosphates when derived from magmatic-hydrothermal systems compared to metamorphic-hydrothermal systems to improve understanding of the mechanisms by which some mineral deposits were formed. Data are provide in CSV format. |
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Tungsten Deposits in the United States (ver. 2.0, August 2020)
Detailed descriptions of mineral deposits containing this commodity, including history, production, resource estimates, and geographic features. Data are provided in CSV, shapefile, Microsoft Excel, and Esri file geodatabase formats. |
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Solid and aqueous geochemistry for mill tailings and other ore processing materials
Geochemical analyses of solid mill tailings and other ore processing materials from worldwide localities, and leachates from those samples. Data are provided in CSV format. |
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Re-Os Geochronologic Data for Porphyry Deposits in the Yukon-Tanana Upland, Eastern Alaska
Isotopic composition and calculated geochronology in order to date the mineralizing events in these hydrothermal systems. Data are provided in CSV format. |
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Global Geochemical Database for Critical Minerals in Archived Mine Samples
Chemistry and geologic information for historic ore and ore-related rock samples from mineral deposits in the United States and from archetypal deposits from 27 other countries. Data are provide in Microsoft Access, Microsoft Excel, and CSV formats. |
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U-Pb Isotopic Data and Ages of Detrital Zircon Grains and Graptolite Fossil Data from Selected Rocks from the Western Alaska Range, Livengood area, and Seward Peninsula, Alaska - 2018
U-Pb isotopic data and associated ages of detrital zircon grains and fossil identifications and age assignments from a select sedimentary rocks in this area. Data are provided in CSV format. |
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U-Pb Isotopic Data and Ages of Detrital Zircon Grains, Whole Rock Major and Trace-element Geochemistry, and Whole Rock Isotopic Data from Selected Rocks from the Western Alaska Range, Medfra area, and Livengood area, Alaska
U-Pb isotopic data and associated ages, whole rock major and trace-element geochemistry, and whole rock Sr, Nd, and Pb isotopic data to understand history and process of formation of these rocks. Data are provided in CSV format. |
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Tin Deposits in the United States
Locations, extent, and detailed characteristics and history of mineral deposits containing this commodity, including history of production, resource estimates, and extent of surface workings. Data are provided in Esri file geodatabase, shapefile, and CSV formats. |
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Whole Rock Major and Trace Element Chemistry for Igneous and Sedimentary Rocks from the Western Alaska Range, Alaska
Whole rock major and trace element data for 399 igneous and sedimentary rock samples collected from this area. Data are provided in CSV format. |
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