Mine detail: Hardshell Mine

Previously called 'Eagle-Pitcher PropertiesManto'

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Location

Lat / long:

31.45958, -110.71706

Resource(M)

Primary:	Manganese, Silver, Lead, Gold, Copper
Secondary:	Zinc
Ore:	Anglesite, Braunite, Cerargyrite, Gold, Hemimorphite, Hydrozincite, Manganite, Mimetite, Psilomelane, Pyrolusite, Pyromorphite, Smithsonite, Wulfenite
Gangue:	Clay, Limonite, Quartz
Orebody form:	IRREGULAR, LENSES
Discovery year:	1879

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1896
Last production ended:	1964

Geology

Host type:	Volcanic Breccia (Agglomerate),Rhyolite
Associated type:	Shale,Conglomerate,Limestone
Structure:	Corral Canyon Fault Block, Downthrow To Sw. Located On N-S Trending American Fault, Fault Gouge And Silicified Fault Breccia In A Strong Fault Zone; Bedding Plane Fault In Conglomerate
Alteration processes:	Silicification Of Fault Breccia

References

MRDS	M030387
DEP	10103551
Reference	{Deposit:: KEITH, 1975, ABM BULL 191.}{Deposit:: SCHRADER, 1915, USGS BULL 582.}{Deposit:: ELSING & HEINEMAN, 1936, ABM BULL 140.}{Deposit:: VON FAY, 1965, ASARCO REPORT.}{Deposit:: ADMR FILE DATA, HARDSHELL MINE, TRENCH MILL.}{Deposit:: ABGMT CLIPPINGS FILE; HARDSHELL MINE, EAGLE PITCHER LEAD CO.}{Deposit:: ABGMT FILE DATA, STANTON B. KEITH.}{Deposit:: ABGMT-USBM FILE DATA.}{Deposit:: USBM FILES, HARDSHELL 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.}{Other Database:: CIMRI}{Production:: KEITH, 1975; ELSING & HEINEMAN, 1936.}{Reserve-Resource:: NIEMUTH, 1987.}
Reporter	Peterson, Jocelyn A., Orris, Greta J.