||View looking west toward San Bernardo mill and mine. Dumps mark general course of the San Bernardo vein. The summit of San Bernardo Mountain is capped by Tertiary Telluride Conglomerate. Conspicuous outcrop of north shoulder of mountain (at right) is of hornfeld Mancos Shale cut by an arm of the Ophir stock. Outcrop to right of the lower dump is granodiorite porphyry of Ames sill. Wilson Mountains Primitive area, San Miguel County, Colorado. ca. 1968. Published as figure 8 in U.S. Geological Survey. Bulletin 1353-A. 1972.