ABSTRACT

The Lee Mountain Mine was discovered in 1864 and was worked steadily until the 1890s when low gold, silver and lead prices forced the operation to shut down. Operations resumed in 1902 and continued through the late 1930’s. The ore was extracted through 7 drift tunnels and associated shafts and raises, in all aggregating about 6,000 feet of underground workings. The ore minerals consisted of galena (PbS), sphalerite (ZnS), and cerusite (PbCO3), with pyrite (FeS2) and arsenopyrite (FeAsS) as gangue minerals (Pardee and Schrader, 1933).