Mine detail: Cobre Grande Mine.

Previously called ''

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Location

Lat / long:

32.97649, -110.29234

Resource(M)

Primary:	Copper, Lead
Tertiary:	Iron, Silver
Ore:	Chalcanthite, Chalcopyrite, Tenorite
Gangue:	Calcite, Chlorite, Epidote, Garnet, Pyrite, Quartz, Specularite
Orebody form:	TABULAR
Other material:	Magnetite
Discovery year:	1905

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1916
Last production ended:	1957

Geology

Host rock:	Escabrosa Limestone Limestone, Dolomite.;Horquilla Limestone Pennsylvanian Limestone, Thin Shale Beds
Host type:	Limestone
Associated rock:	68 My/Copper Creek Granodiorite
Associated type:	Diorite
Structure:	Block Faulting Trending Nnw. ; Reg.Trends: Minor Pre-Cretaceous E And Ne Trending Folds And Major Post-Cretaceous Nnw Trending Faults.
Tectonic:	Basin And Range.
Alteration processes:	Oxidation Of Minerals,Silicification.

References

MRDS	M050093
DEP	10039447
Reference	{Deposit:: USGS PP 461}{Deposit:: USGS BULL 763}{Deposit:: USBM-ABGMT FILE DATA}{Deposit:: 1925 GEOLMAP ROSS, C.P. BULL. 763.}{Deposit:: 1958 DIREXPL DUVAL SULPHUR AND POTASH CO. BULLDOZING.}{Deposit:: 1964 GEOLMAP SIMONS, F.S. PROF. PAPER 461.}{Production:: ROSS, 1925.}
Reporter	Bergquist, Joel R., Laraba, Peter (Gest, Don E.)