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Quantitative X-ray mapping of Au-Ag ratios in native electrum from the Fire Creek epithermal vein deposit, Lander County, Nevada (USA)
Microscopy and Microanalysis
Gold-Silver ratios of electrum from the Fire Creek deposit of Lander County, NV (USA), were quantified using X-ray mapping and spot analysis with EPMA (Electron Probe Microanalysis). The Fire Creek deposit produces high-grade gold and silver ore from a series of mid-Miocene high angle veins and faults hosted in basaltic-andesite along the western margin of the Northern Nevada Rift. This shallow, lowsulfidation epithermal deposit has produced about 530,000 Troy ounces of gold with average gradedoi:10.1017/s1431927621004840 fatcat:z2smvs3rhbf6xitdsgzobiz4si