Mine detail: Mendocino Mining & Milling Co. Inc.

Previously called 'Hopland'

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Location

Lat / long: 38.96376, -123.06775

Resource(M)

Primary: Gold
Secondary: Platinum
Tertiary: Mercury
Ore: Cinnabar, Gold
Orebody form: STREAM SEDIMENT DEPOSITS

Production

Operation type: Unknown
Deposit type: Stream Placer
Production size: Small
Development status: Producer
Production years: 1883, 1924

Geology

Host rock:Franciscan Formation
Host type:Gravel
Tectonic:California Coast Ranges

References

MRDSM045326
DEP10038056
Reference{Deposit:: *RIEN, J.C., 1953, MINES AND MINERAL RESOURCES OF MENDOCINO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 49, NO. 4, P. 367.}{Deposit:: LAIZURE, C.MCK., 1924, MENDOCINO COUNTY: CALIFORNIA STATE MINING BUREAU, 20TH REPORT OF THE STATE MINERALOGIST, P. 87.}{Deposit:: LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 44.}
ReporterBlair, Will N., Peterson, Jocelyn A.