The Volcanoville district is in north-central El Dorado County and south-central Placer County, about eight miles northeast of Georgetown and 30 miles east of Auburn. It includes the Kentucky Flat area. It is both a lode- and placer-mining district.
Geology and Ore Deposits
A number of patches of andesite-capped Tertiary gravel were deposited by a channel that extended north through Kentucky Flat and then west through Volcanoville. An older well-cemented "white" channel contains much quartz gravel; there is a younger channel. The gold is coarse. Several gold-quartz veins in schist and slate, near or adjacent to a belt of serpentine, crop out in the west portion of the district. Some of the quartz veins have yielded high-grade pockets and well-developed quartz crystals.
Placer: Bedrock, Buckeye Point, Kenna, Kenny, Kentucky Flat, Morris, Tiedeman.
Lode: Boedner, Bootjack, Green, Josephine, Paymaster.
Clark, W B., and Carlson, D. W., 1956, El Dorado County, placer gold deposits: California Jour. Mines and Geology, vol. 52, pp. 429-435.
Irelan, William, Jr., 1888, The Josephine mine: California Min. Bur. Rept. 8, pp. 165-166.
Lindgren, Waldemar and Turner, H. W., 1894, Placerville folio: U.S. Geol. Survey Geol. Atlas of the U. S., folio 3, 3 pp.
Lindgren, Waldemar, 1911, Tertiary gravels of the Sierra Nevada: U.S. Geol. Survey Prof. Paper 73, pp. 168-169.Tucker, W. B., 1919, EI Dorado County, placer mines: California Min. Bur. Rept. 15, pp. 300-303.