Centennial Mine

Past Producer in Albany county in Wyoming, United States with commodities Gold, Silver, Platinum

Geologic information

Identification information

Deposit ID 10038157
MRDS ID M045447
MAS/MILS ID 0560010115
Record type Site
Current site name Centennial Mine
Included sites Centennial Ridge District

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.1575, 41.29472 (WGS84)
Elevation 2591
Location accuracy 250(meters)
Relative position SE4 of Sec. 4. Adit labeled on McCallum, pl 1.
(click for info)

Geographic areas

Country State County
United States Wyoming Albany

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 015N 078W 04 SE4 Wyoming

Comments on the location information

  • IN MEDICINE BOW NATIONAL FOREST

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Platinum Tertiary

Comments on the commodity information

  • 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

Materials information

Materials Type of material
Chalcopyrite Ore
Chrysocolla Ore
Gold Ore
Malachite Ore
Pyrite Ore
Calcite Gangue
Chlorite Gangue
Dolomite Gangue
Epidote Gangue
Siderite Gangue

Analytical data

Result ORE REPORTEDLY AVERAGED 1.5 OZ/TON AU

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

Main Entrance (1) -106.1575, 41.29472

Geologic structures

Type Description Terms
Regional Mullen Creek-Nash Fork Shear Zone
Local Shear Zones Prominent

Ore body information

  • General form DISSEMINATED

Controls for ore emplacement

  • Pt Associated With Sulfide Masses. Shears

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1875
Year of first production 1876
Year of last production 1877
Production years 1876

Mining district

District name Centennial Ridge District

Land status

Ownership category National Forest
Area name Medicine Bow National Forest

Comments on the production information

  • $90,000 IN FREE MILLING GOLD WAS REALIZED. NO PLATINUM PRODUCTION REPORTED BUT POTENTIAL BY ASSOCIATION IS A POSSIBILITY
  • Gold production was 4,500 ounces. (PIC-32, p. 12)

Comments on the workings information

  • ADIT

Comments on development

  • FIRST LODE DISCOVERED IN Centennial Ridge DISTRICT

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M045447
U.S. Bureau of Mines Minerals Availability System MAS 0560010115 = newMRDS 10302827, merged and deleted

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

    BEELER, H.C., 1906, MINERALS OF ALBANY COUNTY, WYOMING: LARAMIE REPUBLICAN CO. PRINTERS, P. 11

  • Deposit

    HAUSEL, W.D., 1989, THE GEOLOGY OF WYOMING'S PRECIOUS METAL LODE AND PLACER DEPOSITS: GEOLOGICAL SURVEY OF WYOMING BULLETIN 68, P. 94.

  • Production

    BEELER, 1906, P. 11

  • 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.

General comments

Subject category Comment text
Deposit QUARTZ VEINS. VEIN ENDS AT A FAULT AND ATTEMPTS TO FIND OTHER SIDE FAILED; UNPUBLISHED MODEL NAME: NEW RAMBLER CU-AU-PGE.
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)
Deposit FREE GOLD IN SHEAR ZONE AND QTZ VEINS IN SCHISTS AND GNEISSES. (From deleted MAS rescord 0560010115 = newMRDS 10302827.
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)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-75 Blair, Will N. U.S. Geological Survey
Updater 01-JUL-82 Barari, Rachel A. U.S. Geological Survey
Updater 01-AUG-91 Peterson, Jocelyn A. U.S. Geological Survey
Reporter 18-NOV-83 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0560010115 = newMRDS 10302827
Editor 04-AUG-11 Wilson, Anna B U.S. Geological Survey