Mine detail: Polar Star

Previously called 'Santa ClaraBlack Hawk'

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Location

Lat / long: 35.74273, -121.27127

Resource(M)

Primary: Mercury
Ore: Cinnabar
Orebody form: PODS
Discovery year: 1870

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
Production years: 1904, 1935 - 1937, 1940 - 1944, 1946

Geology

Host type:Clastic Sedimentary Rock
Alteration processes:Silica Carbonate Alteration Of Serpentine

References

MRDSM055786
DEP10040902
Reference{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Deposit:: BAILEY, E. H., USGS, PERSONAL FILES}{Deposit:: ECKEL, E. B., YATES, R. G., AND GRANGER, A. E., 1940, QUICKSILVER DEPOSITS IN SAN LUIS OBISPO COUNTY AND SOUTHWESTERN MONTEREY COUNTY CALIFORNIA: USGS BULL. 922-R, P. 515 - 580}{Deposit:: FRANKE, H. A., 1935, MINES AND MINERAL RESOURCES OF SAN LOUIS OBISPO COUNTY, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 31, P. 434 - 455}{Deposit:: 5) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.}{Deposit:: 6) RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-486}{Production:: USBM DATA}
ReporterPeterson, Jocelyn A.