Mine detail: Zeibright Mine

Previously called ''

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Location

Lat / long: 39.33139, -120.75417

Resource(M)

Primary: Gold
Secondary: Copper
Ore: Gold, Pyrite, Chalcopyrite, Pyrrhotite
Gangue: Quartz
Orebody form: Tabular
Discovery year: 1890

Production

Operation type: Underground
Deposit type: Hydrothermal vein
Development status: Past Producer

Geology

Host rock:Shoo Fly Complex
Host type:Slate,Volcanic Rock (Aphanitic)
Structure:Melones Fault Zone
Tectonic:Magmatic arc
Alteration processes:None specifically reported, although there is a vague reference by MacBoyle (1919) to the slate wallrock being ?slightly changed at contact with the ledge.?

References

DEP10310718
Reference{Deposit:: Beard, J. S. and Day, H. W., 1987, The Smartville intrusive complex, Sierra Nevada, California: The core of a rifted volcanic arc: Geological Society of America Bulletin, v. 99, no. 6, p. 779-791.}{Deposit:: Brooks, E. R., 2000, Geology of a late Paleozoic island arc in the Northern Sierra terrane, in Brooks, E. R. and Dida, L.T., editors, Field guide to the geology and tectonics of the northern Sierra Nevada: California Division of Mines and Geology Special Publication 122, p. 53-110.}{Deposit:: Clark, L. D., 1960, Foothills fault system, western Sierra Nevada, California: Geological Society of America Bulletin, v. 71, p. 483-496.}{Deposit:: Clark, W.B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 45-46.}{Deposit:: Day, H. W. and others, 1988, Metamorphism and tectonics of the northern Sierra Nevada, in Ernst, W. G., editor, Metamorphism and crustal evolution of the western United States (Rubey Volume VII): Prentice-Hall, Englewood Cliffs, New Jersey, p. 738-759.}{Deposit:: Harwood, D.S., 1988, Tectonism and metamorphism in the northern Sierra Terrane, northern California, in Ernst, W. G., editor, Metamorphism and crustal evolution of the western United States (Rubey Volume VII): Prentice-Hall, Englewood Cliffs, New Jersey, p. 764-788.}{Deposit:: Lindgren, W., 1900, Colfax folio, California: U.S. Geological Survey Atlas of the U.S., Folio 66, 10 p.}{Deposit:: Logan, C.A., 1941, Nevada County: 37th Annual Report of the State Mineralogist, California Journal of Mines and Geology, p. 431.}{Deposit:: MacBoyle, E., 1919, Nevada County: 16th Annual Report of the State Mineralogist, California State Mining Bureau, p. 260-261.}{Deposit:: Mining and Scientific Press, 1902, Placer County: Mining and Scientific Press, v. 85, no. 10, p. 135.}{Deposit:: Saucedo, G.J. and Wagner, D.L., 1992, Geologic map of the Chico Quadrangle, California: California Department of Conservation, Division of Mines and Geology Regional Geologic Map Series, Map No. 7A, scale 1:250,000.}{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.}
ReporterHiggins, Chris T., Schruben, Paul G.