Comstock Mine

Producer in Iron county in Utah, United States with commodity Iron
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. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10011116
MRDS ID D005354
Record type Site
Current site name Comstock Mine
Related records 10299835, 10300473

Geographic coordinates

Geographic coordinates: -113.36024, 37.64414 (WGS84)
Elevation 2012
Relative position 3,400 FT SSW OF HOMESTAKE MINE

Site location context

Political divisions (FIPS codes)

Iron(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Desert Mound(quadrangle 1:24,000 scale)

Cedar City(quadrangle 1:100,000 scale)

Cedar City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Escalante Desert(hydrologic unit)

Escalante Desert-Sevier Lake(hydrologic accounting unit)

Escalante Desert-Sevier Lake(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Utah Iron

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 036S 013W 30 Utah

Comments on the location information

  • SECTION SUBDIVISIONS: NE 1/4, SW 1/4, NW 1/4

Commodities

Commodity Importance
Iron Primary

Comments on the commodity information

  • ORE OCCURS AS A SOFT, BLACK, FINE, GRANULAR MIXTURE WITH OCCASIONAL RIBS OF HARD, DENSE MATERIAL.

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Calcite Gangue

Alteration

  • (Local) Limonitization

Analytical data

Result IRON 54%

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Iron Mtn. Pluton
    Rock description Iron Mtn. Pluton
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Homestake Limestone Member Of Carmel Formation
    Rock description Homestake Limestone Member Of Carmel Formation
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)

Nearby scientific data

(1) -113.36024, 37.64414

Economic information

Geologic structures

Type of structure Regional
Structure description Sevier Thrust System
Type of structure Local
Structure description Iron Mtn. Intrusion, Faulting

Ore body information

  • General form TABULAR
    Strike N 0 DEG S
    Dip 30 DEG E
    Length 426.72M
    Width 836.68M

Controls for ore emplacement

  • Fracturing, Faulting, Brecciation, Favorable Limestone

Comments on the geologic information

  • BRECCIATION OF PORPHYRY AND SEDIMENTARY ROCKS IS IMPORTANT IN LOCALIZATION OF IRON MINERALIZATION.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No
Year of first production 1956

Mining district

District name Pinto Iron

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Utah International, Inc.
  • Type Owner
    Owner C. F. And I. Steel Corp.

Production statistics

  • Year 1968
    Period 1956 - 1968
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 54wt-pct

Workings at the site

  • Type of workings Surface
    Area 80.94HA

Comments on the workings information

  • BENCH MINE, WORKINGS INCLUDE THE COMSTOCK AND MOUNTAIN LION ORE BODIES

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ORE BODY IS A HUGE ROOF PENDANT REPLACEMENT DEPOSIT IN HOMESTAKE LIMESTONE. IT IS CUT BY SEVERAL FAULTS OF SMALL TO LARGE DISPLACEMENTS, PRODUCING A JUXTAPOSITION OF SEDIMENTARY BLOCKS
Deposit THIS DEPOSIT UNDERLIES COMSTOCK, COPPER FRACTION, DEAR, SUNBEAM, STRIP, EMMA AND THE MOUNTAIN LIAR GROUP OF CLAIMS, AND IS KNOWN TO BE ONE LARGE CONTINUOUS ORE BODY. ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 Stegan, Ralph J. Bureau of Land Management

Beyond USGS

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