Mine detail: Bernal

Previously called ''

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Location

Lat / long: 37.21992, -121.79325

Resource(M)

Primary: Mercury
Ore: Cinnabar
Gangue: Dolomite, Quartz
Orebody form: IRREGULAR
Discovery year: 1918

Production

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

Geology

Host type:Serpentinite
Structure:Local Fracturing, Clay - Serpentine Contact
Alteration processes:Silica Carbonate Alteration Of Serpentine

References

MRDSM055600
DEP10040736
Reference{Deposit:: BAILEY, E. H. AND EVERHART, D. L., 1964, GEOLOGY AND QUICKSILVER DEPOSITS OF THE NEW ALMADEN DISTRICT, SANTA CLARA COUNTY, CALIFORNIA: USGS PROF. PAPER 360, 206 P.}{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Deposit:: BAILEY, E. H., USGS, PERSONAL FILES}{Deposit:: BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, BULL. 78, 389 P.}{Deposit:: 5) DAVIS, F.F. AND JENNING, C.W., 1954, MINES AND MINERAL RESOURCES OF SANTA CLARA COUNTY, CALIF.: CJMG, V. 50, P. 342-354}{Deposit:: 6) FRANKE. H.A., 1930, SANTA CLARA COUNTY, MINING IN CALIFORNIA: REPT. OF THE STATE MINERALOGIST, V. 26, P. 26-33}
ReporterPeterson, Jocelyn A.