Mine detail: American Eagle

Previously called 'Bullion HillBlue BellAnd Bonanza'

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Location

Lat / long:

37.55936, -120.25516

Resource(M)

Primary:	Copper, Zinc
Secondary:	Gold, Silver, Lead
Ore:	Chalcopyrite, Galena, Pyrite, Sphalerite, Tetrahedrite
Gangue:	Barite, Calcite, Quartz, Sericite
Orebody form:	TABULAR
Discovery year:	1890

Production

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

Geology

Host type:	Schist
Structure:	Schistosity Trends North, Rocks Extremely Fissile, Crinkled And Folded; Crinkles In Schistosity Plung 50 - 70 North Or South, Suggest Zone Of Shearing.
Alteration processes:	Hydrothermal, Sericitization

References

MRDS	M009407
DEP	10030918
Reference	{Deposit:: BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 199 - 200 .}{Deposit:: ERIC, J. H., AND COX, M. W., 1948 , ZINC DEPOSITS OF THE AMERICAN EAGLE - BLUE MOON AREA, MARIPOSA COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 142 - 144 .}
Reporter	Gere, W., Fraticelli, L. A. (Albers, J.)