The Centennial Mine is a gold mine located in Albany county, Wyoming at an elevation of 8,501 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: 8,501 Feet (2,591 Meters)
Commodity: Gold
Lat, Long: 41.29472, -106.15750
Map: View on Google Maps
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Centennial Mine MRDS details
Site Name
Primary: Centennial Mine
Secondary: Centennial Ridge District
Commodity
Primary: Gold
Secondary: Silver
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.
Administrative Organization: Medicine Bow National Forest
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: lode vein
Operation Type: Underground
Year First Production: 1876
Year Last Production: 1877
Discovery Year: 1875
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
Structure
Type: R
Description: Mullen Creek-Nash Fork Shear Zone
Type: L
Description: Shear Zones Prominent
Alterations
Not available
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Gneiss
Role: Host
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: ORE REPORTEDLY AVERAGED 1.5 OZ/TON AU
Materials
Ore: Malachite
Ore: Chrysocolla
Ore: Chalcopyrite
Ore: Gold
Ore: Pyrite
Gangue: Epidote
Gangue: Siderite
Gangue: Calcite
Gangue: Dolomite
Gangue: Chlorite
Comments
Comment (Deposit): QUARTZ VEINS. VEIN ENDS AT A FAULT AND ATTEMPTS TO FIND OTHER SIDE FAILED; UNPUBLISHED MODEL NAME: NEW RAMBLER CU-AU-PGE.
Comment (Location): IN MEDICINE BOW NATIONAL FOREST
Comment (Production): $90,000 IN FREE MILLING GOLD WAS REALIZED. NO PLATINUM PRODUCTION REPORTED BUT POTENTIAL BY ASSOCIATION IS A POSSIBILITY
Comment (Commodity): UNABLE TO FIND SOURCE OF PGE DATA; NO REFERENCE TO PGE IN REFERENCES CITED, HOWEVER, ITS PRESENCE IS LIKELY BASED ON OTHER PROPERTIES IN DISTRICT
Comment (Development): FIRST LODE DISCOVERED IN Centennial Ridge DISTRICT
Comment (Workings): ADIT
Comment (Deposit): A GOLD-BEARING GARNET SCHIST FROM THIS PROPERTY IS IN THE SMITHSONIAN MUSEUM (PIC-32, p. 12 also gives this info, but doesn't mention the garnet)
Comment (Deposit): "The Centennial Mine, the first known lode mine in the district, was opened in 1876 (Beeeler, 1906, p. 11). Several drifts and prospect pits were developed in iron stained hornblendic gneisses and schists about one mile south of the village of Centennial. Free gold was present associated with shear zones and quartz veins, and a total production of at least $90,000 in free milling gold ore was realized. Ore productioon ceased when the workings penetrated a "flat fault" which suppoedly cut off the mineralized zone." (McCallum, 1968, p. 10)
Comment (Deposit): FREE GOLD IN SHEAR ZONE AND QTZ VEINS IN SCHISTS AND GNEISSES. (From deleted MAS rescord 0560010115 = newMRDS 10302827.
Comment (Production): Gold production was 4,500 ounces. (PIC-32, p. 12)
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. 94.
Reference (Deposit): BEELER, H.C., 1906, MINERALS OF ALBANY COUNTY, WYOMING: LARAMIE REPUBLICAN CO. PRINTERS, P. 11
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, pl. 1.
Reference (Deposit): Hausel, W.D., 1993, Guide to the geology, mining districts, and ghost towns of the Medicine Bow Mountains and Snowy Range Scenic Byway: Geological Survey of Wyoming Public Information Circular no. 32, 53 p.
Pages: p. 10-12.
Reference (Production): BEELER, 1906, P. 11
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