Mine detail: Montana Mine

Previously called 'Rough and Ready'

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Location

Lat / long: 31.45791, -111.23569

Resource(M)

Primary: Lead, Gold, Silver
Secondary: Zinc, Copper
Tertiary: Antimony, Arsenic, Cadmium
Ore: Chalcopyrite, Galena, Pyrite, Sphalerite, Tetrahedrite
Gangue: Quartz
Orebody form: LINEAR, TABULAR
Discovery year: 1872

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
Production years: 1928-1940
First production started: 1875
Last production ended: 1958

Geology

Host rock:Oro Blanco Formation;Ruby Diorite
Host type:Diorite
Associated rock:Ruby Diorite;Sidewinder Quartz Monzonite
Associated type:Diorite
Structure:Block Faulting.
Tectonic:Basin And Range
Alteration processes:Iron And Manganese Stains.

References

MRDSM050255
DEP10039546
Reference{Deposit:: KNIGHT, L.H. JR. 1970, STRUCTURE AND MINERALIZATION OF THE ORO BLANCO DISTRICT ...: UNIV. ARIZ. PH.D. THESIS.}{Deposit:: FOWLER, G.M., 1938, 1951, MONTANA MINE: ARIZ. BUREAU OF MINES BULLS. 145 & 158.}{Deposit:: WARREN, H.V., AND LOOF BOUROW, R.W., 1932,... MONTANA AND IDAHO MINES ...: ECON. GEOL., V. 27, NO. 6, P. 578-585}{Deposit:: ABGMT-USBM FILE DATA}{Deposit:: ABM BULL 191, P. 65.}{Deposit:: ADMR FILE DATA, MONTANA MINE}{Deposit:: NIEMUTH, N.J., 1987, ARIZONA MINERAL DEVELOPMENT 1984-1986: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES DIRECTORY 29, 46 P.}{Deposit:: SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: U.S. BUREAU OF MINES SPECIAL PUBLICATION, 334 P.}{Deposit:: ANDRUS, D.E., 1931, MILLING METHODS AND COSTS AT THE MONTANA MINE CONCENTRATOR: U.S. BUREAU OF MINES INFORMATION CIRCULAR 6497.}{Deposit:: 1931 U.S. BUREAU OF MINES IC 6497}{Deposit:: 1938 GEOLMAP ARIZ. BUREAU OF MINES , BULL. 145}{Other Database:: CIMRI}{Production:: KNIGHT, 1970 - FROM PRIVATE REPORT.}{Reserve-Resource:: NIEMUTH, 1987; SAWYER AND OTHERS, 1992.}
ReporterOrris, Greta J., Johnson, Maureen G., Harner, Joy L. (Peterson, Jo)