Colorado

Prospect in Alaska, United States with commodities Gold, Copper

Geologic information

Identification information

Deposit ID 10093999
MRDS ID A011769
Record type Site
Current site name Colorado
Alternate or previous names Wiley
Related records 10161407

Geographic coordinates

Geographic coordinates: -141.06553, 61.96582 (WGS84)
Relative position On south side of Beaver Creek, 1.2 mi upstream from confluence of Ptarmigan Creek with Beaver Creek. Best location: MacKevett, 1976, loc. 187. Accurate within radius of 1,000 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Pyrrhotite Ore
Calcite Gangue
Quartz Gangue

Nearby scientific data

(1) -141.06553, 61.96582

Comments on the geologic information

  • Geologic Description = Small massive sulfide body in Triassic (?) gabbro surrounded by surficial deposits. Probably related to nearby Cretaceous granodiorite pluton.
  • Age = Cretaceous

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = Explored by a short adit.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011769
USGS Alaska Resource Data File ARDF MC012

Bibliographic references

  • Deposit

    Moffit, F.H., and Knopf, Adolph, 1910, Mineral resources of the Nabesna-White River district, Alaska, with a section on the Quaternary by S.R. Capps: U.S. Geological Survey Bulletin 417, 64 p.

  • Deposit

    Moffit, F.H., 1943, Geology of the Nutzotin Mountains, Alaska, with a section on the igneous rocks, by R. C. Wayland, and Gold deposits near Nabesna, by R. C. Wayland, 1943: U.S. Geological Survey Bulletin 933-B, p. 103-199.

  • Deposit

    Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

  • Deposit

    Knaebel, Jeff, 1970, Geochemical survey and geological reconnaissance of the White River area, south-central Alaska: Alaska Division of Mines and Minerals Geochemical Report 21, 60 p.

  • Deposit

    MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, scale 1:250,000.

Comments on the references

  • Primary Reference = Moffit and Knopf, 1910

General comments

Subject category Comment text
Deposit Model Name = Lode: massive, contact metasomatic

Reporter information

Type Date Name Affiliation Comment
Reporter 31-OCT-1997 Leonard, K.R. U.S. Geological Survey
Reporter 31-OCT-1997 Elliott, R.L. U.S. Geological Survey
Reporter 31-OCT-1997 Richter, D.H. U.S. Geological Survey