| Reference | {Deposit:: Carlson, D.W., and Clark, W.H., 1954, Mines and mineral resources of Amador County, California: California Division of Mines and Geology, 50th Report of the State Mineralogist, p. 173-177.}{Deposit:: Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 69-76.}{Deposit:: Clark, W.B. and Carlson, D.W., 1956, Mines and mineral resources of Amador County: California Division of Mines, California Journal of Mines and Geology, v. 52, p. 422.}{Deposit:: Duffield, W.A. and Sharp, R.V., 1975, Geology of the Sierra foothills melange and adjacent areas, Amador County, California: U.S. Geological Survey Professional Paper 827, 30 p.}{Deposit:: Irelan, W., Jr., 1888, Amador County, Keystone Consolidated Mining Company: California State Mining Bureau, 8th Annual Report of the State Mineralogist, p. 63-66.}{Deposit:: Logan, C.A., 1921, Mines and mineral resources of Amador County, Keystone Mine: California State Mining Bureau, 22nd Report of the State Mineralogist, p.411.}{Deposit:: Logan, C.A., 1934, Mother Lode gold belt of California: California Division of Mines Bulletin 108, p. 92-95.}{Deposit:: Schweickert, R.A., Hanson, R.E., and Girty, G.H., 1999, Accretionary tectonics of the Western Sierra Nevada Metamorphic Belt in Wagner, D.L. and Graham, S.A., editors, Geologic field trips in northern California: California Division of Mines and Geology Special Publication 119, p. 33-79.}{Deposit:: Storms, W.H., 1900, The Mother Lode region of California: California Mining Bureau Bulletin 18, p 77-78.}{Deposit:: Tucker, W.B., 1914, Mines and mineral resources of Amador County, Keystone Mine: California State Mining Bureau, 14th Report of the State Mineralogist, p. 34-36.}{Deposit:: Additional information on the Keystone Mine is available in file no. 339-1454 (CGS Mineral Reources Files, Sacramento).}{Deposit:: 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J.E., 1983, The Geology and structural evolution of a portion of the Mother Lode Belt, Amador County, California: unpublished M.S. thesis, University of Arizona, 138 p.} |