A few small lode mines and prospects exist in the general vicinity of Slate Mountain, which is in north-central El Dorado County about 10 miles northeast of Placerville and 10 miles southeast of Georgetown. The veins are narrow and occur in slate and schist. Years ago several small but rich surface pockets were recovered. There are several tungsten prospects in the area.
Lindgren, Waldemar, and Turner, H.W., 1894, Placerville folio: U.S., folio 3, 3 pp.