Unnamed (lower Ptarmigan Creek)

Occurrence in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10001083
MRDS ID A011767
Record type Site
Current site name Unnamed (lower Ptarmigan Creek)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -141.04053, 61.94471 (WGS84)
Relative position 1.75 mi up Ptarmigan Creek from where Ptarmigan Creek enters Beaver Creek. Best location: MacKevett, 1976, loc. 185. Accurate within radius of 1,000 feet.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
    Rock unit name Wutzotin Mts. Sequence (Informal Name)
    Rock description Wutzotin Mts. Sequence (Informal Name)

Nearby scientific data

(1) -141.04053, 61.94471

Comments on the geologic information

  • Geologic Description = Pyrite and minor chalcopyrite disseminated in Jura-Cretaceous argillite and a small Triassic (?) gabbro mass near a fault.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chisana

Comments on the workings information

  • Workings / Exploration = None

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011767
USGS Alaska Resource Data File ARDF MC014

Bibliographic references

  • 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 = Knaebel, 1970

General comments

Subject category Comment text
Deposit Model Name = Lode: disseminated

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