California · Tuolumne County
Past Producer

South United Mines

Tuolumne County, California, United States
Gold
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
Commodity typeM
Deposit
Deposit typeHydrothermal vein
Model273: Low-sulfide Au-quartz vein
Orebody formTabular, pinch and swell
Ore controlOre shoots in quartz veins. The best ore was reported to be at the intersection of granodiorite dikes and diorite dikes with the quartz veins.
Materials
Ore mineralsGold, Pyrite, Galena
GangueQuartz
Geology
Host rockMetamorphic Rock,Slate,Mica Schist,Granodiorite · "Calaveras Complex or Shoo Fly Complex", "Standard Pluton"
AlterationNone reported
Economic & production
Development statusPast Producer
Discovery year1858
Identification
Deposit ID10310685
Alternate namesGrizzly, Eureka, Deadhorse, Lady Washington, New Albany, North Albany
RegionNA
Data scoreB
Coordinates37.96115, -120.22049
References
Clark, W. B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 121-123.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. 72-73.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.Higgins, C.T., 1997, Mineral land classification of a portion of Tuolumne County, California, for precious metals, carbonate rock, and concrete-grade aggregate: California Division of Mines and Geology Open-File Report 97-09, 85 p.Julihn, C.E., and Horton, F.W., 1940, Mineral industries survey of the United States - Mines of the southern Mother Lode Region, Part II - Tuolumne and Mariposa counties: U.S. Bureau of Mines Bulletin 424, 179 p.Knopf, A., 1929, The Mother Lode system of California: U. S. Geological Survey Professional Paper 157, 88 p.Koschmann, A.H., and Bergendahl, M.H., 1968, Principal gold-producing districts of the United States: U. S. Geological Survey Professional Paper 610, 283 p.Logan, C.A., 1921, Tuolumne County: California State Mining Bureau, 17th Annual Report of the State Mineralogist, p. 483-484.Logan, C.A., 1928, Tuolumne County: California State Mining Bureau, 24th Annual Report of the State Mineralogist, p. 20-21.Logan, C.A., 1949, Mines and mineral resources of Tuolumne County, California: California Journal of Mines and Geology, v. 45, no. 1, p. 47-83.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.Tucker, W.B., 1916, Tuolumne County: California State Mining Bureau, 14th Annual Report of the State Mineralogist, p. 132-172.Wagner, D.L., Bortugno, E.J., and McJunkin, R.D., 1990, Geologic map of the San Francisco-San Jose Quadrangle, California: California Department of Conservation, Division of Mines and Geology Regional Geologic Map Series, Map No. 5A, scale 1:250,000.Jones, A.J., 1936, Eureka-Deadhorse-Lady Washington summary: Unpublished consulting report, 8 p.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.