Commodities
PrimaryCopper, Silver
SecondaryLead, Zinc, Gold
TertiaryIron
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formIRREGULAR
Ore controlOres Occur Principally In Veins, Fissures, And Contacts In Rhyolite, And Contacts With Grano-Porphyry And Quartz Diorite
Materials
Ore mineralsBornite, Chalcocite, Chalcopyrite, Cuprite, Galena, Pyrite, Sphalerite, Tetrahedrite
GangueHematite
Geology
Host rockRhyolite,Plutonic Rock
Associated rockDiorite,Trachyandesite · Mt Wrightson Formation;Josephine Canyon Diorite
StructureGeneral Structure Common To Regional Formations Is A Sheeting Which Dips 40 Nnw, Main Vein Paralleled By Banded Iron Formation-Hematite Dike Showing Some Copper Stain, And By Several Smaller Parallel Quartz Veins; 5 Principal Veins On Property
Tectonic settingAlum Gulch Fault Block
AlterationExtensive Surface Oxidation
Economic & production
Development statusProducer
Discovery year1875
Identification
Deposit ID10048345
MRDS IDM899932
Alternate namesBlue Eagle and Exposed Reef Group, Saint Louis Mine
RegionNA
Data scoreB
Coordinates31.49458, -110.74874
References
USBM FILES, EXPOSED REEF MINESADMR FILE DATA, EXPOSED REEF AND BLUE EAGLE GROUPSABGMT FILES, STANTON B. KEITHSCHRADER, FRANK C., 1915, MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTAINS, ARIZONA; USGS BULLETIN 582, P.257-258SIMONS, FRANK S., 1974, GEOLOGIC MAP AND SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1:48000)SIMONS, FRANK S., 1972, MESOZOIC STRATIGRAPHY OF THE PATAGONIA MOUNTAINS AND ADJOINING AREAS, SANTA CRUZ COUNTY, ARIZONA; USGS PROFESSSIONAL PAPER 658-EABGMT CLIPPINGS FILE, EXPOSED REEF MINEMOORES, RICHARD C., 1972, THE GEOLOGY AND ORE DEPOSITS OF A PORTION OF THE HARSHAW DISTRICT, SANTA CRUZ COUNTY, ARIZONA; M.S. THESIS, UNIVERSITY OF ARIZONA