This district is in the Clipper Mountains in east-central San Bernardino county about five miles northwest of Danby. Gold was discovered here in 1915, and there was considerable activity for a few years following. Several wide gold-bearing quartz-calcite veins occur in fault zones in volcanic rocks of Miocene age. The ore-bearing zones are as much as 50 feet thick and 1500 feet long. The principal sources of gold have been the Clipper Mountain, Gold Reef, and Tom Reed mines.
Tucker, W. B., 1921, San Bernardino County, gold: California Min. Rept. 17, pp. 345-346.