Mine detail: Cosumnes

Previously called 'Middle End'

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Location

Lat / long:

38.60962, -120.60073

Resource(M)

Primary:	Gold
Secondary:	Copper, Silver, Lead, Molybdenum
Ore:	Bornite, Chalcopyrite, Magnetite, Powellite, Silver
Gangue:	Calcite, Epidote, Garnet, Quartz
Discovery year:	1859

Production

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

Geology

Host type:	Limestone
Associated type:	Diorite

References

MRDS	M008385
DEP	10030332
Reference	{Deposit:: CLARK, W. B. AND CARLSON, D. W., 1956 : MINES AND MINERAL RESOURCES, EL DORADO COUNTY, CA.: CALIF. JOUR MINES AND GEOLOGY, VOL. 52 , NO. 4 : DIV. OF MINES, P. 394 - 395 .}{Deposit:: GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NOS. 3 & 4 : DIV. OF MINES, P. 441 .}{Deposit:: USGS BULL. 1182E P. 35-36.}
Reporter	Fraticelli, L. A. (Albers, J.), Gere, W.