Mine detail: Keystone Shaft

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Location:	Summit County, Utah, United States, North America
Lat / long:	40.61911, -111.54161
dep_id:	10087986
mrds_id:	D012015
Commodity type:	metallic
Major mineral:	Lead, Silver, Zinc
Minor mineral:	Gold
Trace mineral:	Copper
Operation type:	Unknown
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Chalcopyrite, Galena, Gold, Malachite, Sphalerite
gangue:	Quartz
other_matl:	Pyrite
orebody_fm:	TABULAR
work_type:	Underground
alteration:	Oxidation, Silicification
conc_proc:	Replacement Of Favorable Beds, Precipitation In Fissures
ore_ctrl:	Northeast Striking Fissures, Limestone Beds Adjacent To Fissures
Reporter:	Shubat, Michael A.
hrock_unit:	Thaynes Formation;Ankareh Formation
hrock_type:	Shale,Limestone
arock_unit:	Crescent Dike
arock_type:	Diorite
Structure:	Uinta-Cottonwood Arch, Sevier Overthrust Belt, Iron Hollow Syncline, Crescent Fault Zone
tectonic:	Basin And Range-Colorado Plateau Transition Zone, Cordilleran Hinge Line
Year first produced:	1923
yr_lst_prd:	1926
disc_yr:	1875
References:	Deposit:: BOUTWELL, J.M., 1912, GEOLOGY AND ORE DEPOSITS OF THE PARK CITY DISTRTICT, UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 77, 231 PP. Deposit:: ERIKSON, A.J., (EDITOR), 1968, PARK CITY DISTRICT, UTAH: GUIDEBOOK TO THE GEOLOGY OF UTAH, NO. 22, UTAH GEOLOGICAL SOCIETY. 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, 672 PP. Deposit:: BARNES, M.P., AND SIMOS, J.S., 1968, ORE DEPOSITS OF THE PARK CITY DISTRICT WITH A CONTRIBUTION ON THE MAYFLOWER LODE, IN ORE DEPOSITS OF TTHE UNITED STATES: AM. INST. METALL, ENG., V. II, P. 1102 Deposit:: BAKER, A.A., CALKINS, F.C., CRITTENDEN, MD.D., JR., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE BRIGHTON QUADRANGLE, UTAH: U.S. GEOLOGICAL SURVEY GEOL. QUAD. MAP GQ-534 Production:: BARNES & SIMOS, 1968