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Platinum City Mine

Past Producer in Albany county in Wyoming, United States with commodities Gold, Copper, Platinum
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10038158
MRDS ID M045448
MAS/MILS ID 560010193
Record type Site
Mineralized Area Centennial Ridge
Current site name Platinum City Mine
Included sites Centennial Ridge District

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.15833, 41.27556 (WGS84)
Elevation 2682
Location accuracy 50(meters)
Relative position 2 MI SOUTHWEST OF CENTENNIAL. Within 1/4 1/4 section. NW4 of NE4 of Sec. 16. Mine marked on topo, but labeled on pl. 1 of McCallum (1968, PR-7).

Site location context

Political divisions (FIPS codes)

Albany(county)

Wyoming(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Centennial(quadrangle 1:24,000 scale)

Saratoga(quadrangle 1:100,000 scale)

Rawlins(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Laramie(hydrologic unit)

North Platte(hydrologic accounting unit)

North Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Medicine Bow-Routt National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Wyoming Albany

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 015N 078W 16 NW4 OF NE4 Wyoming

Comments on the location information

  • ON LOWER EAST FLANK OF CENTENNIAL RIDGE. IN MEDICINE BOW NATIONAL FOREST

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Platinum Critical Tertiary

Comments on the commodity information

  • UNVERIFIED REPORT OF PT

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Tectonite > Mylonite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

Main Entrance (1) -106.15833, 41.27556
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Mullen Creek-Nash Fork Shear Zone

Ore body information

  • General form DISSEMINATED IN VEINS AND PODS

Controls for ore emplacement

  • Fracturing

Comments on the geologic information

  • GEOL.DESC: HONEYCOMBED QUARTZ CONTAINED FREE GOLD
  • VEINS FOUND IN AMPHIBOLIZED META-IGNEOUS ROCKS IN SCHISTS.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Centennial Ridge District

Land status

Ownership category National Forest

Comments on the production information

  • NO PRODUCTION FIGURES AVAILABLE; SMALL PRODUCTION PRESUMED

Comments on the workings information

  • DRIFTS AND CROSSCUTS

Reference information

Bibliographic references

  • Deposit

    MCCALLUM, M.E., 1968, THE CENTENNIAL RIDGE GOLD-PLATINUM DISTRICT, ALBANY COUNTY, WYOMING: GEOLOGICAL SURVEY OF WYOMING PRELIMINARY REPORT 7, P. 10.

  • Deposit

    HAUSEL, W.D., 1980, GOLD DISTRICTS OF WYOMING: GEOLOGICAL SURVEY OF WYOMING REPORT OF INVESTIGATIONS 23, P. 34.

  • Deposit

    HAUSEL, W.D., 1989, THE GEOLOGY OF WYOMING'S PRECIOUS METAL LODE AND PLACER DEPOSITS: GEOLOGICAL SURVEY OF WYOMING BULLETIN 68, P. 99-100.

General comments

Subject category Comment text
Deposit "The Platinum City Mine is located on a wide belt of amphibolitized meta-igneous rocks in mafic gneisses and schists along the lower east flank of Centennial Ridge about two miles south of Centennial. Several prospect drifts and crosscuts have been driven where pegmatite, quartz, and sulphide veins cut the dominantly hornblendic rocks. Honeycombed quartz at the surface reportedly contained free gold, whereas sulphide veins and pods supposedly contained both gold and platinum metals. NRRI assays on dump samples collected in 1961 showed only copper and iron." (McCallum, 1968, p. 10)
Deposit PEGMATITE, QUARTZ, AND SULFIDE VEINS; UNPUBLISHED MODEL NAME: NEW RAMBLER CU-AU-PGE.
Deposit SULFIDE VEINS OF GOLD & PLATINUM ALONG WITH PEGMATITIES & QTZ.

Reporter information

Type Date Name Affiliation Comment
Reporter 1975-02-01 Blair, Will N. U.S. Geological Survey
Reporter 1983-11-18 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines =0560010193 (newMRDS 10205497), merged and deleted.
Updater 1991-08-01 Peterson, Jocelyn A. U.S. Geological Survey
Editor 2010-02-02 Wilson, Anna B. U.S. Geological Survey =0560010193 (newMRDS 10205497), merged and deleted. Revised 04-aug-2011.

Beyond USGS

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

External references

Maps centered on this site