Geochemical, geophysical, geological, and mineral resource data supporting an assessment of undiscovered tungsten skarn deposits in this area. Permissive tracts and other information derived from the analysis are provided in shapefile, CSV, and Esri file geodatabase formats.

Site-by-site information on 876 natural occurrences of asbestos reported within the conterminous US. Includes location, mineralogy, geology, and relevant literature for each asbestos site. Data are provided in Microsoft Excel, shapefile, and CSV formats.

Physical properties (density, magnetic susceptibility, and remanent magnetism) from 20,000 rock samples. Data are provided in CSV format.

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.

Digital flight-line aeromagnetic and aeroradiometric survey data over of the southeast Mojave Desert, parts of California and Nevada. Data files are provided in CSV as well as Geosoft binary database and grid exchange format (GXF).

Rock property measurements including density, magnetic susceptibility, and radiometric concentrations to understand structural and geophysical relationships associated with rare earth element mineral deposits. Data are provided in CSV format.

Data obtained from a detailed airborne radiometric survey of this area flown by helicopter at a flight-line spacing of 100 and 200 m, a flight-line azimuth of 70 degrees, a nominal flight-line elevation above ground of 70 m, over about 1,814 line-kilometers. Radioelement data are presented for potassium (K), equivalent thorium (eTh), and equivalent uranium (eU). Data are provided in GXF format.

Magnetotelluric (MT) data from 65 stations collected in 2015 in this area create a regional conductivity model near the Mountain Pass mine.

Whole rock geochemical analysis and, for zircons, isotopic composition to assess the genesis of igneous rocks that host the Mountain Pass rare earth element deposit. Data are provided in CSV format.

Detailed airborne gravity gradiometry, magnetic, and radiometric survey data for this area flown with flight-line spacing of 100 and 200 m, nominal flight-line elevation above ground of 70 m, for about 1,814 line-kilometers. Data are provided in CSV and Geosoft database (.gdb) format. Gravity and hillshade are in GXF grids.

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.