Mine detail: National Mine

Previously called 'ErinNational Consolidated Mine'

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Location

Lat / long:

31.40931, -110.78235

Resource(M)

Primary:	Copper
Secondary:	Silver, Gold, Lead
Ore:	Chalcopyrite, Pyrite
Gangue:	Limonite
Orebody form:	TABULAR
Discovery year:	1899

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1906
Last production ended:	1915

Geology

Host type:	Granite
Associated type:	Diorite
Structure:	Deposits In Region Are Mainly Lead-Silver Quartzitic Veins Which Strike E-W At About Right Angles To Axis Of Range, Deposits Mainly In Coarse Granite Porphyry Which Intrudes Quartz Monzonite; Monzonite Outcrops Nearby To Ne
Tectonic:	N-S Trending Piedmont Fault; Patagonia Range Uplifted On East
Alteration processes:	Minor Oxidation; Granite Porphyry Altered Near Vein

References

MRDS	M899905
DEP	10048327
Reference	{Deposit:: USBM-ABGMT PRODUCTION DATA FILE}{Deposit:: USBM FILE DATA-CLUSTER #22, NATIONAL MINE}{Deposit:: SCHRADER, F.C., 1915, USGS BULL 582, P. 310-311}{Deposit:: KEITH, S.B., 1975, ABM BULL 191, P. 81}{Deposit:: ABGMT CLIPPINGS FILE NATIONAL MINE}{Deposit:: ABGMT FILES STANTON B. KEITH}{Deposit:: SIMONS, FRANK S., 1974 GEOLOGIC MAP AND SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1:48000)}
Reporter	Laraba, Peter (Calder, Susan)