Mine detail: Cerro Gordo

Previously called 'Consolidated GroupLa Despreciada ClaimBluejay ClaimNorthern Star ClaimBluff claimNovember claimOmega claimPagan claimRagged Edge claimUnion Placer claimUnion LeadGentile ClaimEnterprise claimNative Son ClaimSanta Maria claimJefferson ClaimSan Filipe ClaimMormon ClaimCrag ClaimHebrew Mt. ClaimArmagh MineSummit No. 2 MineElla MinePerseverance MineBelmont MineNewtown MineHart MineMorningstar MineSanta Maria MineSan Filipe MineIgnacio MineBousey SilverOmega GroupCerro Gordo MineUnion Mine'

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Location

Lat / long:

36.53774, -117.78758

Resource(M)

Primary:	Zinc, Lead, Silver
Secondary:	Copper, Gold
Ore:	Galena, Tetrahedrite, Cerussite, Anglesite, Chalcopyrite, Pyrite, Smithsonite, Hydrozincite
Gangue:	Marble, Shale, Limonite
Orebody form:	Pipe; Tabular, lens
Discovery year:	1865

Production

Operation type:	Surface-Underground
Deposit type:	Hydrothermal stock, massive; Hydrothermal vein and replacement
Development status:	Past Producer

Geology

Host rock:	Lost Burro Formation, Jefferson Diabase Dike
Host type:	Marble,Diabase
Associated rock:	Union Dike, Green Porphyry Dike, Chainman Shale, Tin Mountain Limestone
Associated type:	Monzonite,Porphyry,Andesite,Dacite,Shale,Limestone
Structure:	Swansea-Coso Thrust System, Cerro Gordo Anticline, Cerro Gordo Anticline, Cerro Gordo Fault, Buena Vista Fault, La Despreciada Fault, Omega Fault
Tectonic:	Passive continental margin
Alteration processes:	Negligible

References

DEP	10310600
Reference	{Deposit:: De Decker, M, 1993, Mines of the Eastern Sierra, La Siesta Press, Glendale, California, pp 57-65.}{Deposit:: Merriam, C. W., 1963, Geology of the Cerro Gordo Mining District, Inyo County, California: U. S. Geological Survey Profession Paper 408, 83 p.}{Deposit:: Nadeau, R. A., 1965, City-makers, the story of southern Californi * first boom, 1868-76, Trans-Anglo Books, 168 p.}{Deposit:: Nadeau, R. A., 1965, Ghost towns and mining camps of California, Ward Ritchie Press, 278 p.}{Deposit:: Tucker, W. B. and Sampson, R. J., 1938, Mineral resources of Inyo County, in California Journal of Mines and Geology, vol 34, no. 4, pp. 431 -434.}{Deposit:: Miscellaneous information on the Cerro Gordo District is contained in File Number 322-7211 (CGS Mineral Resources Files, Sacramento)}
Reporter	Downey, Cameron I. (Higgins, Chris, T.), Schruben, Paul G.