Mine detail: Oriental

Previously called 'Alta'

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Location

Lat / long: 39.45989, -120.85881

Resource(M)

Primary: Gold
Tertiary: Platinum
Ore: Gold, Pyrite, Silver
Gangue: Quartz, Talc
Orebody form: VEIN

Production

Operation type: Unknown
Production size: Medium
Development status: Past Producer

Geology

Host type:Quartzite
Structure:Melones Fault Zone
Tectonic:Sierra Nevada Foothills Accreted Terranes
Alteration processes:Carbonate, Albitic

References

MRDSX025318
DEP10086500
Reference{Deposit:: MCCULLOCH, W.C., OESTERLING, W.A., SPURCK, W.H., AND TISCHLER, M.S., 1964, MINERALS FOR INDUSTRY, NORTHERN CALIFORNIA: SUMMARY OF GEOLOGICAL SURVEY OF 1955-1961: SOUTHERN PACIFIC COMPANY, V. 2, P. 37.}{Deposit:: AVERILL, C.V., 1942, MINES AND MINERAL RESOURCES OF SIERRA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGYU, V. 38, NO. 1, P. 33, 35, 62.}{Deposit:: FERGUSON, H.G., AND GANNETT, R.W., 1932, GOLD QUARTZ VEINS OF THE ALLEGHANY DISTRICT, CALIFORNIA: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 172, P. 98-101, PL. 15.}{Deposit:: J.K. BOHLKE, 1982, WRITTEN COMMUN. TO N.J PAGE, U.S. GEOLOGICAL SURVEY}{Deposit:: LOGAN, C.A., 1941, MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 37, NO. 3, P. 374-408, 425-436, 441-468.}{Production:: FERGUSON AND GANNETT (1932),, AVERILL (1942)}
ReporterHayden, F. (Albers, J.), Peterson, Jocelyn A.