Location
The Escondido district is in western San Diego County about 25 miles north of San Diego and 20 miles southeast of Oceanside. Gold was first mined here many years ago by Mexicans who treated rich surface ores in arrastras. There was considerable activity here during the 1890s and early 1900s.
Geology
The area is underlain by granodiorite, diorite, and gabbro. A number of quartz veins, ranging from a few inches to several feet in thickness, contain free gold and often abundant pyrite. The greatest depth that any vein has been developed is 350 feet.
Mines
Cleveland-Pacific $250,000, Oro Fino, Cravath, Jolly Boy, Coyote.
Bibliography
Merrill, F. J. H., 1916, Escondido: California Min. Bur. Rept. 14, pp. 649-651.
Storms, W. H., 1893, Escondido mines: California Min. Bur. Rept. 11, p.382.
Weber, F. Harold, Jr., San Diego County, gold: California Div. Mines County Rept. 3, pp. 115-170.
