Mine detail: Bender Mine

Previously called 'Black EagleSan FernandoMina Prieta Group'

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Location

Lat / long:

31.44958, -110.71734

Resource(M)

Primary:	Manganese
Secondary:	Silver
Tertiary:	Lead, Zinc, Copper
Ore:	Psilomelane, Pyrite, Pyrolusite, Wad
Gangue:	Hematite, Limonite
Orebody form:	TABULAR
Discovery year:	1875

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1880
Last production ended:	1959

Geology

Host rock:	Concha Limestone;Scherrer Formation
Host type:	Limestone
Structure:	Limestone 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:	American Mine Fault Block Upthrow To Ne
Alteration processes:	Minor

References

MRDS	M899943
DEP	10048355
Reference	{Deposit:: ABGMT-USBM FILE DATA}{Deposit:: USBM FILES, BENDER PROPERTY}{Deposit:: MOORES, 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. 75}{Deposit:: FARNHAM, L.L., STEWART, L.A., AND C.W. DELONG, 1961, MANGANESE, DEPOSITS OF EASTERN ARIZONA; U.S. BUREAU OF MINES INFORMATION CIRCULAR 7990, P. 165-168}{Deposit:: SIMONS, FRANK S., 1972, MESOZOIC STRATIGRAPHY OF THE PATAGONIA MOUNTAINS AND ADJOINING AREAS, SANTA CRUZ COUNTY, ARIZONA, USGS PROFESSIONAL PAPER 658-E, P. 8-9}{Deposit:: ARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA, MINA PRIETA}{Deposit:: KEITH, STANTON B., 1975, INDEX OF MINING PROPERTIES IN SANTA CRUZ COUNTY, ARIZONA; ARIZONA BUREAU OF MINES BULLETIN 191, P.56}{Deposit:: ABGMT FILES, STASNTON 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	Calder, Susan R.