In situ Geochemical Data for Detrital and Porphyry-Related Magnetite from the Taurus Porphyry Cu Deposit and Environs, Alaska, United States

This data release comprises geochemical point analyses of magnetite by electron probe microanalyzer (EPMA) and sample imagery acquired by a combination of scanning electron, reflected light, and transmitted light microscopy. Analyzed elements include Fe, Ti, Al, Mn, Mg, V, Si, Ni, Cr, and Ca. Samples are from the Taurus porphyry Cu-Mo(-Au) deposit in the Yukon-Tanana upland of eastern interior Alaska and compose two types of magnetite. The first subset of EPMA analyses (n=771 individual points) are from detrital magnetite obtained from sediments of streams that drain the deposit and its environs. A second subset of EPMA analyses (n=203) are from hydrothermal, igneous, and metamorphic magnetite associated with porphyry style mineralization and its host lithologies. Complementary sample imagery documents grain-by-grain microstructures, inclusion assemblages, and sample context which are also tabulated herein.