The Platinum City Mine is a gold mine located in Albany county, Wyoming at an elevation of 8,799 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
Elevation: 8,799 Feet (2,682 Meters)
Commodity: Gold
Lat, Long: 41.27556, -106.15833
Map: View on Google Maps
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Mine Description
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.
Source: The Centennial Ridge Gold-Platinum District, Albany County, Wyoming, 1968. The Geological Survey of Wyoming.
Platinum City Mine MRDS details
Site Name
Primary: Platinum City Mine
Secondary: Centennial Ridge District
Commodity
Primary: Gold
Secondary: Copper
Tertiary: Platinum
Location
State: Wyoming
County: Albany
District: Centennial Ridge District
Land Status
Land ownership: National Forest
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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Form: DISSEMINATED IN VEINS AND PODS
Structure
Type: R
Description: Mullen Creek-Nash Fork Shear Zone
Alterations
Not available
Rocks
Name: Mylonite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Mylonite
Role: Host
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Gold
Gangue: Quartz
Comments
Comment (Workings): DRIFTS AND CROSSCUTS
Comment (Deposit): PEGMATITE, QUARTZ, AND SULFIDE VEINS; UNPUBLISHED MODEL NAME: NEW RAMBLER CU-AU-PGE.
Comment (Production): NO PRODUCTION FIGURES AVAILABLE; SMALL PRODUCTION PRESUMED
Comment (Commodity): UNVERIFIED REPORT OF PT
Comment (Location): ON LOWER EAST FLANK OF CENTENNIAL RIDGE. IN MEDICINE BOW NATIONAL FOREST
Comment (Geology): GEOL.DESC: HONEYCOMBED QUARTZ CONTAINED FREE GOLD
Comment (Deposit): SULFIDE VEINS OF GOLD & PLATINUM ALONG WITH PEGMATITIES & QTZ.
Comment (Geology): VEINS FOUND IN AMPHIBOLIZED META-IGNEOUS ROCKS IN SCHISTS.
Comment (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)
References
Reference (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.
Pages: p. 99-100.
Reference (Deposit): HAUSEL, W.D., 1980, GOLD DISTRICTS OF WYOMING: GEOLOGICAL SURVEY OF WYOMING REPORT OF INVESTIGATIONS 23, P. 34.
Pages: p. 34.
Reference (Deposit): MCCALLUM, M.E., 1968, THE CENTENNIAL RIDGE GOLD-PLATINUM DISTRICT, ALBANY COUNTY, WYOMING: GEOLOGICAL SURVEY OF WYOMING PRELIMINARY REPORT 7, P. 10.
Pages: p. 10.
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