The Summit Extension is a gold and copper mine located in Summit county, Utah at an elevation of 9,400 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Elevation: 9,400 Feet (2,865 Meters)
Primary Mineral: Gold, Copper
Lat, Long: 40.61639, -111.55667
Map: View on Google Maps
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Summit Extension MRDS details
Primary: Summit Extension
Secondary: Summit Extension Shaft
Secondary: Summit Extension Incline, Silver King Western
Secondary: Silver King Coalition Mines Co.
District: Park City District
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Owner Name: Silver King Western Manufacturing Co.
Home Office: Salt Lake City, UT
Record Type: Site
Operation Category: Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1875
Discovery Method: Ore-Mineral In Place
Years of Production:
Deposit Size: S
General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains
Physiographic Detail: Wasatch Mountains
Mineral Deposit Model
Description: Uinta-Conttonwood Arch, Sevier Overthrust Belt, Cordilleran Hingeline
Description: Northeast Striking Fissure
Alteration Type: L
Alteration Text: Pyrification, Bleaching, Iron Staining, Gypsum Veining, Oxidation
Age Type: Associated Rock
Age Young: Oligocene
Age Type: Associated Rock Unit
Age Young: Oligocene
Age Type: Host Rock
Age Young: Oligocene
Analytical Data: ORE SUPPOSEDLY RAN $5 PER TON AU
Comment (Deposit): NO PRODUCTION INFORMATION AVAILABLE ; INFO.SRC : 1 PUB LIT
Comment (Geology): NORTHEAST STRIKING FISSURE HERE APPEARS TO CORRELATE WITH NORTHEAST FISSURE LOCATED AT THE COMSTOCK - CALIFORNIA MINE AREA.
Comment (Deposit): Discovery Year: 1870'S
Comment (Location): COORDINATES GIVEN ARE FOR SHAFT, SUMMIT EXTENSION INCLINE HAS UTM COORDINATES OF 4496100 N 452750 E. PROPERTY LOCATED IN SCOTTS PASS ; INFO FROM LAND.ST :1983
Comment (Commodity): GYPSUM ALSO PRESENT AS GANGUE
Comment (Development): SILVER KING WESTERN COMPANY IS CURRENTLY EXPLORING FOR PB-AG ORE. THEY THINK THAT THERE MAY BE AN OREBODY ON THE PROPERTY
Comment (Deposit): WHERE EXPLORED, DEPOSIT CONSISTS OF A FISSURE LOCALIZED ENTIRELY WITHIN THE GRANODIORITE STOCK, NO REPLACEMENT-TYPE MINERALIZATION IS PRESENT. AREA APPEARS TO BE THE SOUTHWESTERN EXTENSION OF THE PRODUCTIVE COMSTOCK-CALIFORNIA FISSURE.
Comment (Workings): WORKINGS CONSIST OF A SHAFT, AT LEAST 100 FT DEEP AND HAVING TWO DRIFTS, AND AN INCLINE AT LEAST 200 FT LONG.
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.
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.
Reference (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.
Reference (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
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