Mine detail: Black Nugget Mine

Previously called 'U. S. Group'

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Location

Lat / long:

33.76339, -113.22576

Resource(M)

Primary:	Manganese
Ore:	Manganite, Psilomelane, Pyrolusite
Gangue:	Calcite
Discovery year:	1939

Production

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

Geology

Host type:	Andesite
Structure:	Offset Into 2 Or More Segments By Crossfaulting

References

MRDS	M003451
DEP	10102524
Reference	{Deposit:: USBM-FILE DATA-CLUSTER NUMBER 480-BLACK NUGGET MINE}{Deposit:: ARIZONA B.M. BULL. 127, P.67}{Deposit:: U.S.G.S. BULL. 710 P.140}{Deposit:: FARNHAM, L.L., AND STEWART, L.A, 1958, MN DEPOSITS OF WESTERN ARIZONA, U.S.B.M. INFO. CIRC. 7843.}{Production:: FARNHAM AND STEWART, 1958}
Reporter	Harner, Joy L. (Peterson, Jo)