Mine detail: Invincible Prospect

Previously called 'Blue Eagle and Exposed Reef Group'

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Location

Lat / long:

31.50403, -110.75679

Resource(M)

Primary:	Copper
Secondary:	Gold
Gangue:	Sulfur
Orebody form:	IRREGULAR
Discovery year:	1875

Production

Operation type:	Unknown
Production size:	Unknown
Development status:	Occurrence

Geology

Host type:	Rhyolite,Plutonic Rock
Associated rock:	Mountain Wrightson Formation;Josephine Canyon Diorite
Associated type:	Diorite,Trachyandesite
Structure:	General Structure Common To Regional Formations Is A Sheeting Which Dips 40 Nnw, Rhyolite Cut By Series Of Joints Dipping 25-30 Nnw, In Which There Is A Concentration Of Almost Pure Iron Sulfides In Veinlets Or Bands (Maximum Width 1.5 In)
Tectonic:	Alum Gulch And Red Mountain Fault Block
Alteration processes:	Surface Oxidation To Unknown Depths

References

MRDS	M899928
DEP	10048341
Reference	{Deposit:: USBM FILES, INVINCIBLE PROSPECT}{Deposit:: ABGMT FILES, STANTON B. KEITH}{Deposit:: SCHRADER, FRANK C., 1915, MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTAINS, ARIZONA; USGS BULLETIN 582, P. 257}{Deposit:: ADMR FILE DATA, EXPOSED REEF AND BLUE EAGLE GROUPS}{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	Calder, Susan R.