Mine detail: Spenceville

Previously called 'Copper ClaimImperial Paint and Copper.Spense Mineral San Francisco Copper Co.'

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Location

Lat / long:

39.11545, -121.2716

Resource(M)

Primary:	Copper
Secondary:	Gold, Silver
Ore:	Bornite, Chalcopyrite, Pyrite
Gangue:	Quartz
Orebody form:	IRREGULAR
Discovery year:	1875

Production

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

Geology

Host type:

Diorite,Diabase

References

MRDS	M010821
DEP	10031668
Reference	{Deposit:: AUBURY, L. E., 1908 , COPPER RESOURCES OF CALIFORNIA BULL. 50 ; CALIF. MIN. BUR., P. 191 - 194}{Deposit:: MACBOYLE, E., 1918 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY; 16TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 90 .}{Deposit:: CALIF. JOUR. MINES & GEOLOGY, V. 37, NO. 3, JULY 1941, P. 464; ADD. REF.: REPORT OF STATE MINERALOGIST XXVI; INDUSTRIAL SERVICE-METALLIFEROUS II-C, P. 48; FOLIO 18}
Reporter	Gere, W., Fraticelli, L. A. (Albers, J.)