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Data to accompany U.S. Geological Survey Data Series 1099: Petrographic, geochemical and geochronologic data for Cenozoic volcanic rocks of the Tonopah, Divide, and Goldfield Mining Districts, Nevada This dataset is the assembled analytical results of geochemical, petrographic, and geochronologic data for samples, principally those of unmineralized Tertiary volcanic rocks, from the Tonopah, Divide, and Goldfield mining districts of west-central Nevada. Much of the data presented here for the Tonopah and Divide districts are for samples collected by Bonham and Garside (1979) during geologic mapping in and around those districts, whereas much of that for samples from the Goldfield district were obtained by Ashley (1974; 1979; 1990). Additional data were derived from samples collected between 2012–2017, as part of the U.S. Geological Survey Mineral Resources Program funded project titled: “Magmatic-tectonic history... Categories: Data; Tags: Ar, Divide mining district, Economic Geology, Esmeralda County, Fraction Tuff, All tags... GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Goldfield mining district, Heller Tuff, ICP–AES, ICP–MS, LA-ICPMS, MRP, Mineral Resources, Mineral Resources Program, Nevada, New Mexico Geochronology Research Center, Nye County, Pb, SHRIMP-RG, Sensitive High Resolution Ion Microprobe with Reverse-Geometry, Siebert Tuff, Tonopah mining district, U, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Walker Lane geologic province, argon, geochemistry, geochronology, geoscientificInformation, inductively coupled plasma—atomic emission spectrometry, inductively coupled plasma—mass spectrometry, laser ablation inductively coupled plasma—mass spectrometry, lead, petrography, precious metal deposits, uranium, volcanic rocks, wavelength dispersive X-ray fluorescence spectrometry, Fewer tags