Mine detail: Black Rock Mine

Previously called 'Pacific Mines'

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Location

Lat / long:

33.0909, -114.5944

Resource(B)

Primary:	Lead, Silver, Zinc
Tertiary:	Fluorine-Fluorite, Manganese, Molybdenum
Ore:	Anglesite, Galena, Limonite, Pyrolusite, Smithsonite, Wulfenite
Gangue:	Calcite, Fluorite, Quartz
Orebody form:	VUGS & IRREGULAR MASSES

Production

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

Geology

Host type:	Schist
Associated type:	Andesite
Structure:	Complex Faulting And Fracturing Have Affected The Schist. Black Rock Follows A Fault Zone
Alteration processes:	Schist Is Silicified, Chloritized, & Carbonatized For 50 Ft From Vein

References

MRDS	M002447
DEP	10027198
Reference	{Deposit:: PARKER, F.Z., 1966, THE GEOLOGY AND MINERAL DEPOSITS OF THE SILVER DISTRICT, TRIGO MOUNTAINS; YUMA COUNTY, ARIZONA: MASTER THESIS SAN DIEGO STATE COLLEGE, P. 118-126.}{Deposit:: WILSON, E.D., 1951, ARIZONA ZINC AND LEAD DEPOSITS: ARIZ. B.M. BULLETIN 158, P. 93.}{Deposit:: WILSON, E.D., 1933, GEOLOGY AND MINERAL DEPOSITS OF SOUTHERN YUMA COUNTY, ARIZONA; ARIZ. B.M. BULLETIN 134, P. 67.}{Deposit:: KEITH, S.B., 1978, INDEX OF MINING PROPERTIES IN YUMA COUNTY, ARIZONA; ARIZONA BUREAU OF MINES BULLETIN 192, P. 175.}{Deposit:: PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.}{Other Database:: CIMRI}{Production:: KEITH, S.B., 1978.}
Reporter	Gere, W., Hall, R. K. (Creasey, S. C.), Orris, Greta J.