|Current site name||Gold Cliff Mine|
|Alternate or previous names||Utica-Stickles Mine|
|Geographic coordinates:||-120.54511, 38.06578 (WGS84)|
|Relative position||The Gold Cliff Mine is located on the southern edge of the City of Angels Camp|
|(click for info)|
|Materials||Type of material|
|USGS model code||36a|
|Deposit model name||Low-sulfide Au-quartz vein|
|Mark3 model number||27|
|Host or associated||Host|
|Rock type||Metamorphic Rock > Schist > Amphibole Schist|
|Host or associated||Host|
|Rock type||Metamorphic Rock > Schist|
|Rock type qualifier||chloritic and talcose|
|Local||Melones Fault Zone|
|Regional||Bear Mountains fault zone, Melones fault zone|
|General form||Tabular, pinch and swell|
|Development status||Past Producer|
|District name||Angels Camp|
|Area name||City of Angels Camp|
Brown, J. A., 1890, Calaveras County, Gold Cliff Mine: California State Mining Bureau, 10th Annual Report of the State Mineralogist, p. 150.
Clark, L.D., 1970, Geology of the San Andreas 15-minute quadrangle, Calaveras County, California: California Division of Mines and Geology Bulletin 195, 23 p.
Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 25-28.
Clark. W. B., and Lydon, P.A., 1962, Mines and mineral resources of Calaveras County, California: California Division of Mines and Geology County Report No. 2, p. 55.
Earhart, R.L., 1988, Geologic setting of gold occurrences in the Big Canyon area, El Dorado County, California: U.S. Geological Survey Professional Paper 1576, 13 p.
Eric, J.H., Stromquist, A.A., and Swinney, C.M., 1955, Geology and mineral deposits of the Angels Camp and Sonora quadrangles, Calaveras and Tuolumne counties, California: California Division of Mines Special Report 41, 55 p.
Julihn, C.E., and Horton, F.W., Mineral industries survey of the United States - Mines of the southern Mother Lode Region, Part 1, Calaveras County, Utica and Gold Cliff mines: U.S. Bureau of Mines Bulletin 413, p. 136.
Knopf, A., 1929, The Mother Lode system of California: U. S. Geological Survey Professional Paper 157, p. 71-72.
Logan, C. A., 1934, Mother Lode Gold belt of California: California Division of Mines and Geology Bulletin 108, p. 140-141.
Tucker, W. B., 1914, Calaveras County, Gold Cliff Mine: California State Mining Bureau, 14th Annual Report of the State Mineralogist, p. 98.
Storms, W.H., 1900, The Mother Lode region - Calaveras County: California Mining Bureau Bulletin 18, p 111.
Eisenhauer, R. C., 1932, Preliminary report on the property of the Utica Mining Company: unpublished geological report for the Utica Mining Company.
Zimmerman, J.E., 1983, The Geology and structural evolution of a portion of the Mother Lode Belt, Amador County, California: unpublished M.S. thesis, University of Arizona, 138 p.
|Subject category||Comment text|
|Deposit||The ore bodies in the Gold Cliff Mine are not within simple veins like many Mother Lode deposits, but instead consist of numerous lenticular stringer veins separated by various thicknesses of fissured and mineralized amphibolite and chloritic and talcose schist. The stringers range from a few inches to three feet thick and are largely quartz, but carbonate is abundant, especially in the smaller fissures. In the Gold Cliff mine, the stringers strike about N 50? W and dip northeasterly, lying nearly in the planes of schistosity of the country rock (Eisenhauer, 1932). Both the quartz and nearby country rock contain free gold and auriferous pyrite. The schist is greatly altered and pyritized and carries the greater gold values. The schists are largely altered and composed of ankerite and sericite, with subordinate quartz, albite, and pyrite.|
|Reporter||17-MAY-2006||Downey, Cameron (Higgins, Chris, T.)||California Geological Survey CGS (Formerly CDMG)|
|Editor||01-SEP-2007||Schruben, Paul G.||U.S. Geological Survey||Converted from S&A FileMaker format to Oracle. Edit checks on rocks, units, and ages with Geolex search, and other fields.|