Mine detail: American Tunnel

Previously called 'American MineSilver King Coalition Mines CompanySilver King Western'

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Location

Lat / long:

40.62327, -111.57717

Resource(M)

Primary:	Copper, Silver, Gold
Secondary:	Lead
Tertiary:	Manganese
Ore:	Argentite, Chalcopyrite, Galena, Gold, Malachite, Wad
Gangue:	Calcite, Quartz
Orebody form:	TABULAR, POD
Discovery year:	1875

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1875
Last production ended:	1918

Geology

Host rock:	Park City Formation
Host type:	Shale,Limestone
Associated rock:	Diorite Porphyry Dikes
Associated type:	Diorite
Structure:	Uinta-Cottonwood Arch, Sevier Overthrust Belt, Cordilleran Hingeline, American Zone Of Northeast Striking Fissures, Diorite Dikes, And Mineralization
Tectonic:	Cordilleran Hingeline, Basin And Range-Colorado Plateau Transition Zone
Alteration processes:	Silicification, Bleaching, And Calc-Silicate Formation Adjacent To Dikes, Oxidation

References

MRDS	D011921
DEP	10014860
Reference	{Deposit:: JAMES, L.P., 1979, GEOLOGY, ORE DEPOSITS, AND HISTORY OF THE BIG COTTONWOOD MINING DISTRICT, SALT LAKE COUNTY, UTAH: U.G.M.S. BULL. NO. 114.}{Deposit:: CALKINS, F.C., AND BUTLER, B.S., 1943, GEOLOGY AND ORE DEPOSITS OF THE COTTONWOOD-AMERICAN FORK AREA, UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 201.}{Deposit:: BUTLER, B.S., LOUGHLIN, G.F., HEIKES, V.C., AND OTHERS, 1920, THE ORE DEPOSITS OF UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 111.}{Deposit:: BAKER, A.A., CALKINS, F.C., CRITTENDEN, M.D., JR., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE BRIGHTON QUADRANGLE, UTAH: U.S. GEOLOGICAL SURVEY GEOL. QUAD. MAP GQ-534}
Reporter	Shubat, Michael A.