Mineralogy, Mineral Chemistry, and Paragenesis of Gold, Silver, and Base-MetalOres of the North Amethyst Vein System, San Juan Mountains, Mineral County, Colorado

摘要

The paper, part of a detailed investigation of the petrology of the complex oresof the North Amethyst vein system, concentrates on the minerology of the Au-rich areas exposed by underground workings. The mineralogy, mineral chemistry, and paragenesis of the ore of the North Amethyst veins, with limited petrologic