Mine detail: Michigan-Utah Mine

Previously called 'Topeka TunnelCity Rocks TunnelBlack Bess MineSolitude TunnelUtah Mines CoalitionLavinaDarlingtonRegulatorContinental-Alta.Grizzly TunnelCleave TunnelButte Mine'

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Location

Lat / long:

40.59577, -111.61772

Resource(M)

Primary:	Silver, Lead
Secondary:	Manganese, Copper, Gold
Tertiary:	Zinc, Molybdenum
Ore:	Argentite, Chalcopyrite, Galena, Gold, Malachite, Smithsonite, Sphalerite, Wad
Gangue:	Calcite, Quartz
Orebody form:	TABULAR
Discovery year:	1869

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1870
Last production ended:	1928

Geology

Host rock:	Maxfield Limestone;Fitchville Formation
Host type:	Limestone,Dolomite
Associated rock:	Alta Stock;Grizzly Dike-Alaskite
Associated type:	Diorite
Structure:	Sevier Overthrust Belt, Cordilleran Hinge Line, Uinta-Cottonwood Arch, Grizzly Overthrust Zone, Northeast Striking Fissures
Tectonic:	Cordilleran Hinge Line, Basin And Range-Colorado Plateau Transition Zone
Alteration processes:	Bleaching, Minor Silicification, Calc-Silicates, Oxidation

References

MRDS	D011945
DEP	10101913
Reference	{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}{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}{Production:: CALKINS AND BUTLER, 1943}
Reporter	Shubat, Michael A.