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  3. Mineral Resource Data System (MRDS)

Duncan Mine

Past Producer in Fremont county in Wyoming, United States with commodities Gold, Silver
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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. Economic information about the deposit and operations
  13. Mining district
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10080762
MRDS ID W032116
Record type Site
Current site name Duncan Mine
Related records 10254834

Geographic coordinates

Geographic coordinates: -108.75655, 42.48716 (WGS84)
Elevation 2512
Relative position ONE MILE SOUTH OF ATLANTIC CITY, WY

Site location context

Political divisions (FIPS codes)

Fremont(county)

Wyoming(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

South Pass City(quadrangle 1:24,000 scale)

South Pass(quadrangle 1:100,000 scale)

Lander(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sweetwater(hydrologic unit)

North Platte(hydrologic accounting unit)

North Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Wyoming Fremont

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 029N 100W 14 SW OF NW Wyoming

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Gold Ore
Silver Ore
Quartz Gangue

Analytical data

Result AU AVERAGED 0.820 FINE

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Metamorphic Rock > Amphibolite
  • Host or associated Host
    Rock type Metamorphic Rock > Amphibolite

Nearby scientific data

(1) -108.75655, 42.48716
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fault

Ore body information

  • Dip 76 S
    Width 1.52M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Atlantic City - South Pass District : Sweetwater District

Production statistics

  • Year 1955
    Material AU
    Accuracy Accurate
    Description Ap_Grade: ^6.34 Oz Of Au And 0.08 Oz Of Ag Per Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 179g/mt
    Silver Silver 2g/mt

Workings at the site

  • Type of workings Underground
    Overall depth 76.2M

Comments on the workings information

  • SEVERAL HUNDRED FT OF DRIFTS, CROSS CUTS AND OPEN STOPES, SHAFT IS ON SE END OF THE PROPERTY AT THE INTERSECTION OF THE MAIN VEIN AND CROSS VEIN.

Reference information

Bibliographic references

  • Deposit

    GSW BULL 50, P.86.

  • Deposit

    GSW RI 23, P.10.

  • Production

    GSW BULL 50, P.86: GSW RI 23, P.10.

General comments

Subject category Comment text
Deposit WIDTH VARIES FROM 18IN TO 5 FT WIDE AND IS 200 + FT IN LENGTH. MAIN VEIN STRIKES N65W. CROSS VEIN STRIKES N85E AND DIPS 90.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1982 Barari, Rachel A. U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site