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Comstock Mine

Past Producer in Summit county in Utah, United States with commodities Lead, Silver, Zinc, Copper, Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10101916
MRDS ID D012011
Record type Site
Current site name Comstock Mine
Alternate or previous names Silver King Coalition Group, United Park City Mines

Geographic coordinates

Geographic coordinates: -111.54217, 40.623 (WGS84)
Elevation 2646
Relative position 3600 FT N11W FROM JUPITER HILL

Site location context

Political divisions (FIPS codes)

Summit(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Brighton(quadrangle 1:24,000 scale)

Salt Lake City(quadrangle 1:100,000 scale)

Salt Lake City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Weber(hydrologic unit)

Weber(hydrologic accounting unit)

Great Salt Lake(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Utah Summit

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 002S 004E 30 NE OF NE OF NW Utah

Comments on the location information

  • INFO FROM LAND.ST :1983

Commodities

Commodity Importance
Lead Primary
Silver Primary
Zinc Critical Secondary
Copper Secondary
Gold Secondary

Materials information

Materials Type of material
Anglesite Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Malachite Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Massachusetts Dike
    Rock description Massachusetts Dike
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Thaynes Formation
    Rock description Thaynes Formation

Nearby scientific data

(1) Alluvium and colluvium
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Uinta-Cottonwood Arch, Sevier Overthrust Belt, Iron Hollow Syncline
Type of structure Local
Structure description Comstock-Massachusetts Fault, Striking East-Northeast, And Dipping To The Southeast

Ore body information

  • General form TABULAR
    Strike N 75E
    Dip 70 SE
    Length 182.88M
    Depth to top 0M

Controls for ore emplacement

  • Fractured And Brecciated Margins Of Diorite Porphyry Dike Within The Comstock-Massachusetts Fault

Comments on the geologic information

  • COMSTOCK-MASSACHUSETTS FAULT APPEARS TO BE A REVERSE FAULT IN SOME LOCATIONS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1882
Year of first production 1885
Year of last production 1925

Mining district

District name Park City District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner United Park City Mines Co.

Workings at the site

  • Type of workings Surface/Underground
    Area 8.762HA
    Length 1584.96M
    Overall depth 137.16M
    Overall length 609.6M
    Overall width 152.4M

Comments on the workings information

  • 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

Comments on 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

Reference information

Bibliographic references

  • 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.

  • 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 OTHER, 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 THE UNITED STATES: AM. INST. METALL. ENG., V.II, P. 1102

  • 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

General comments

Subject category Comment text
Deposit Discovery Year: EARLY 1880'S
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
Deposit NO PRODUCTION FIGURES GIVEN ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1984 Shubat, Michael A. Utah Geological and Mineral Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site