Mine detail: Grand Pacific Mine

Previously called 'Pacific MinePacific Group'

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Location

Lat / long:

33.26981, -111.07098

Resource(M)

Primary:	Copper
Secondary:	Silver, Gold, Manganese
Ore:	Cuprite
Gangue:	Calcite, Pyrite, Quartz
Orebody form:	LENTICULAR
Discovery year:	1900

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1916
Last production ended:	1955

Geology

Host rock:	Escabosa Limestone;Martin Limestone
Host type:	Limestone
Associated type:	Diabase
Structure:	Nw Trending Fault Systems, Ne Trending Fault Systems, Nw Trending Iron Cap Fault, Ne Trending Sandal Fault
Alteration processes:	Near Surface Oxidation

References

MRDS	M899887
DEP	10048317
Reference	{Deposit:: ABGMT CLIPPINGS FILES}{Deposit:: ABGMT-USBM FILE DATA}{Deposit:: USBM FILES}{Deposit:: SHORT, M.N., GEOLOGY AND ORE DEPOSITS OF THE SUPERIOR MINING AREA, ARIZONA, 1943, ABM BULLETIN 151, P. 158}{Deposit:: FARNHAM, L.L., MANGANESE DEPOSITS OF EASTESRN ARIZONA, 1961, USBM IC 7990, P. 124, 126, 141}{Deposit:: RANSOME, F.L., DEPOSITS OF MANGANESE ORE IN ARIZONA, 1919, USGS 710 P 165}
Reporter	Roth, Frances A. (Gest, Don E.)