Commodities
PrimaryManganese
SecondarySilver
TertiaryLead, Zinc, Copper
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formTABULAR
Ore controlSteeply E-Dipping, N-S Trending Normal Fault. Ore Occurs As Open-Space Fillings And Crusts In Contact Zone, And As Erratically Distributed, Irregular Replacement Bodies In Limestone
Materials
Ore mineralsPsilomelane, Pyrite, Pyrolusite, Wad
GangueHematite, Limonite
Geology
Host rockLimestone · Concha Limestone;Scherrer Formation
StructureLimestone Forms An Uneven Band As Much As 80 Ft Wide, Bounded On N And E By Volcanic Rocks, And S And W By Unaltered Limestone; Irregular Zone Containing Manganese Occurs Between This Band And The Unaltered Limestone, Silicic Lavas And Flow Breccias With Subordinate Silicic Tuffs And Smaller Bodies Of Limestone Conglomerate
Tectonic settingAmerican Mine Fault Block Upthrow To Ne
AlterationMinor
Economic & production
Development statusProducer
First production1880
Last production1959
Discovery year1875
Identification
Deposit ID10048355
MRDS IDM899943
Alternate namesBlack Eagle, San FernandoFernando, Mina Prieta Group
RegionNA
Data scoreB
Coordinates31.44958, -110.71734
References
ABGMT-USBM FILE DATAUSBM FILES, BENDER PROPERTYMOORES, RICHARD C., 1972, THE GEOLOGY AND ORE DEPOSITS OF A PORTION OF THE HARSHAW DISTRICT, SANTA CRUZ COUNTY, ARIZONA; M.S. THESIS, UNIVERITY OF ARIZONA, P. 75FARNHAM, L.L., STEWART, L.A., AND C.W. DELONG, 1961, MANGANESE, DEPOSITS OF EASTERN ARIZONA; U.S. BUREAU OF MINES INFORMATION CIRCULAR 7990, P. 165-168SIMONS, FRANK S., 1972, MESOZOIC STRATIGRAPHY OF THE PATAGONIA MOUNTAINS AND ADJOINING AREAS, SANTA CRUZ COUNTY, ARIZONA, USGS PROFESSIONAL PAPER 658-E, P. 8-9ARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA, MINA PRIETAKEITH, STANTON B., 1975, INDEX OF MINING PROPERTIES IN SANTA CRUZ COUNTY, ARIZONA; ARIZONA BUREAU OF MINES BULLETIN 191, P.56ABGMT FILES, STASNTON B. KEITHSIMONS, FRANK S. 1974, GEOLOGIC MAP AND SECTIONS OF THE NOGALES AND LOCHIEL QUADRANGLES, SANTA CRUZ COUNTY, ARIZONA; USGS MAP I-762 (1:48000)