Mine detail: Dewhirst Mine

Previously called ''

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Location

Lat / long: 37.56911, -121.62133

Resource(M)

Tertiary: Manganese, Silica
Other material: Chert, Glaucophane, Limonite, Psilomelane, Quartz

Production

Operation type: Surface
Development status: Past Producer
First production started: 1915

Geology

References

MRDSM004668
MAS60010009
DEP10186918
Reference{Deposit:: TRASK-GEO.DESCRIPT.MN.DEPS.OF CAL-CAL DIV OF MINES,BUL#152-A}{Deposit:: DOM BULL 125 P98}
ReporterNiemi