War Eagle

Prospect in Alaska, United States with commodities Copper, Iron

Geologic information

Identification information

Deposit ID 10001057
MRDS ID A011736
Record type Site
Current site name War Eagle
Related records 10136864

Geographic coordinates

Geographic coordinates: -143.74363, 61.55855 (WGS84)
Relative position At 3,500 ft elevation - 700 ft southwest of MacDougall Creek, about a mile downstream from headwaters. Best location: Mac Kevett and others, 1978, loc. 32. Accurate within radius of 100 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Iron Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Magnetite Ore
Calcite Gangue
Chlorite Gangue
Diopside Gangue
Epidote Gangue
Garnet Gangue
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Alteration

  • (Local) Contact metamorphism of limestone

Mineral occurrence model information

Model code 59
USGS model code 18b
Deposit model name Skarn Cu
Mark3 model number 8

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Chitistone Limestone
    Rock description Chitistone Limestone

Nearby scientific data

(1) -143.74363, 61.55855

Comments on the geologic information

  • Geologic Description = Small masses of magnetite and diopside skarn in Triassic Chitistone Limestone adjacent to Jurassic granodiorite pluton, contain pyrite, pyrrhotite, chalcopyrite, epidote, chlorite, calcite and quartz. Mineralized zone is up to 8 m thick.
  • Age = Jurassic

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chistochina

Comments on the reserve resource information

  • Reserves = Probably less than 10,000 tons of material assaying as much as 62 percent Fe.

Comments on the workings information

  • Workings / Exploration = Explored by 100 ft adit and surface cuts. Grab samples assayed as much as 1,000 ppm Cu and 62 percent Fe (MacKevett, 1976).Type of workings: surface and underground.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011736
USGS Alaska Resource Data File ARDF MC062

Bibliographic references

  • Deposit

    Moffit, F.H., and Mertie, J.B., Jr., 1923, The Kotsina-Kuskulana district, Alaska: U.S. Geological Survey Bulletin 745, 149 p.

  • Deposit

    Miller, D.J., 1946, Copper deposits of the Nizina district, Alaska: U.S. Geological Survey Bulletin 947F, p. 93-120.

  • Deposit

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

  • Deposit

    MacKevett, E.M., Jr., Smith, J.G., Jones, D.L., and Winkler, G.R., 1978, Geologic map of the McCarthy C-8 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1418, scale 1:63,360.

  • Deposit

    MacKevett, E.M., Jr., Smith, J.G., Jones, D.L., and Winkler, G.R., 1978, Geologic map of the McCarthy C-8 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1418, 1 sheet, scale 1:63,360.

Comments on the references

  • Primary Reference = Moffit and Mertie, 1923

General comments

Subject category Comment text
Deposit Model Name = Cu skarn

Reporter information

Type Date Name Affiliation Comment
Reporter 06-AUG-97 Leonard, K.R. U.S. Geological Survey
Reporter 06-AUG-97 Elliott, R.L. U.S. Geological Survey
Reporter 06-AUG-97 D. Singer U.S. Geological Survey
Reporter 06-AUG-97 Richter, D. H. U.S. Geological Survey