Mine detail: Black Hawk Group

Previously called 'Black Hawk No. 1, 2, and 3Black Eagle Nos. 1 and 2Blue Devil Nos.1 & 2'

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Location

Lat / long:

32.03012, -111.60376

Resource(M)

Primary:	Manganese
Orebody form:	IRREGULAR VEINLETS IN FRACTURE ZONE
Discovery year:	1940

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1955
First production started:	1955

Geology

Host type:	Rhyolite
Associated type:	Rhyolite
Structure:	Northwest Trending Fracture Zone.
Tectonic:	Basin And Range

References

MRDS	M050654
DEP	10039687
Reference	{Deposit:: FARNHAM, STEWART AND DE LONG, 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: USBM IC 7990.}{Deposit:: NOWLAN, G.A., HAXEL, G.B., HANNA, W.F., PITKIN, J.A., DIVELEY-WHITE, D.V., MCDONNELL, J.R., JR., AND LUNDBY, WILLIAM, 1989, MINERAL RESOURCES OF THE BABOQUIVARI PEAK AND COYOTE MOUNTAINS WILDERNESS STUDY AREAS, PIMA COUNTY, ARIZONA: U.S. GEOLOGICAL SURVEY BULLETIN 1702, 30 P.}{Deposit:: 1955 DIREXPL DRAKE MINING CO; MINED ORE}{Deposit:: FARNHAM, STEWART AND DELONG, 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA; USBM IC 7990}{Deposit:: 1956 RECON U.S.B.M. IC 7990}{Other Database:: CIMRI}
Reporter	Johnson, Maureen G., Orris, Greta J.