Mine detail: Black Bear

Previously called 'Buckman GroupKentuck'

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Location

Lat / long: 38.79099, -122.83802

Resource(M)

Primary: Mercury
Ore: Cinnabar
Discovery year: 1875

Production

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

Geology

Host type:Serpentinite
Structure:Serpentine - Sandstone Contact, Tension Fractures
Alteration processes:Silica Carbonate Alteration Of Serpentine

References

MRDSM055698
DEP10040823
Reference{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Deposit:: BAILEY, E. H., 1946, QUICKSILVER DEPOSITS OF THE WESTERN MAYACMAS DISTRICT, SONOMA COUNTY, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, P. 199 - 230}{Deposit:: HONKE, M.T., JR. AND VER PLANCK, W.E., JR., 1950, MINES AND MINERAL RESOURCES OF SONOMA COUNTY, CALIF.: CJMG, V. 46, P. 98-105}{Production:: BAILEY, 1946}
ReporterPeterson, Jocelyn A.