Comstock Mine

The Comstock Mine is a silver and lead mine located in Summit county, Utah at an elevation of 8,681 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.

Mine Info

Name: Comstock Mine  

State:  Utah

County:  Summit

Elevation: 8,681 Feet (2,646 Meters)

Primary Mineral: Silver, Lead

Lat, Long: 40.62306, -111.54139

Map: View on Google Maps

Satelite View

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.


Satelite image of the Comstock Mine

Comstock Mine MRDS details

Site Name

Primary: Comstock Mine
Secondary: Silver King Coalition Group
Secondary: United Park City Mines


Commodity

Primary: Silver
Primary: Lead
Secondary: Zinc
Secondary: Copper
Secondary: Gold


Location

State: Utah
County: Summit
District: Park City District


Land Status

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.


Holdings

Not available


Workings

Type: Surface/Underground


Ownership

Owner Name: United Park City Mines Co.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1885
Year Last Production: 1925
Discovery Year: 1882
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains
Physiographic Detail: Wasatch Mountains


Mineral Deposit Model

Not available


Orebody

Form: TABULAR


Structure

Type: R
Description: Uinta-Cottonwood Arch, Sevier Overthrust Belt, Iron Hollow Syncline

Type: L
Description: Comstock-Massachusetts Fault, Striking East-Northeast, And Dipping To The Southeast


Alterations

Alteration Type: L
Alteration Text: Oxidation


Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic


Analytical Data

Not available


Materials

Ore: Sphalerite
Ore: Chalcopyrite
Ore: Gold
Ore: Galena
Ore: Pyrite
Ore: Malachite
Ore: Anglesite
Gangue: Quartz
Gangue: Calcite


Comments

Comment (Development): PROSPECTING STARTED IN THE 1880'S AFTER ORE WAS HIT ON CRESCENT RIDGE. COMSTOCK MINING CO. WAS ORGANIZED IN 1882 IN LONDON. PROPERTY WAS ESPECIALLY ACTIVE IN 1890, 1893, 1894, AND 1895 WHEN A GOOD ORE BODY WAS STRUCK. THE MAIN SHAFT WAS SUNK IN 1901 AND THE PROPERTY ACTIVE UNTILABOUT 1908 WHEN IT WAS CONSOLIDATED WITH THE SILVER KING CONSOLIDATED MINES CO. PROPERTY WAS LATER CONSOLIDATED WITH UNITED PARK CITY MINES CO. IN 1953

Comment (Deposit): ORE OCCURS IN FRACTURES LOCATED IN BOTH THE HANGING WALL AND FOOTWALL, OF A DIORITE PORPHYRY DIKE LYING WITHIN THE EAST-NORTHEAST STRIKING MASSACHUSETTS-COMSTOCK FAULT. ORE OCCURS IN TWO WELL DEFINED SHOOTS ALONG THESE STRUCTURES, MOSTLY IN THE HANGING WALL BRECCIA ZONE. ONE OF THE SHOOTS BIFRUCATES

Comment (Workings): MAIN TUNNEL IS LOCATED 400 FT NE OF THE SHAFT. MAIN TUNNEL EXTENDS FOR 2000 FT TO THE SOUTHWEST. MAIN SHAFT IS AT LEAST 450 FT DEEP WITH A MAIN LEVEL AT 250 FT AND 2500 TO 3000 FT OF WORKINGS AN INCLINED RAISE CONNECTS THE TUNNEL AND MAIN LEVEL, WITHIN ORE, AND HAS THREE SHORT INTERMIATE LEVELS WITHIN ORE

Comment (Geology): COMSTOCK-MASSACHUSETTS FAULT APPEARS TO BE A REVERSE FAULT IN SOME LOCATIONS

Comment (Deposit): NO PRODUCTION FIGURES GIVEN ; INFO.SRC : 1 PUB LIT

Comment (Location): INFO FROM LAND.ST :1983

Comment (Deposit): Discovery Year: EARLY 1880'S


References

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

Reference (Deposit): BOUTWELL, J.M., 1912, GEOLOGY AND ORE DEPOSITS OF THE PARK CITY DISTRICT, UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 77, 231 PP.

Reference (Deposit): ERIKSON, A.J., (EDITOR), 1968, PARK CITY DISTRICT, UTAH: GUIDEBOOK TO THE GEOLOGY OF UTAH, NO. 22, UTAH GEOLOGICAL SOCIETY.

Reference (Deposit): BUTLER, B.S., LOUGHLIN, G.F., HEIKES, V.C., AND OTHER, 1920, THE ORE DEPOSITS OF UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 111, 672 PP.

Reference (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 THE UNITED STATES: AM. INST. METALL. ENG., V.II, P. 1102


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