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Unnamed (north of Kuskulana Pass)

Occurrence in Alaska, United States with commodities Copper, Iron
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Geologic information

Identification information

Deposit ID 10001053
MRDS ID A011731
Record type Site
Current site name Unnamed (north of Kuskulana Pass)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -143.64557, 61.56272 (WGS84)
Relative position Near head of Slatka Creek. Best location: MacKevett and others, 1978, loc. 35. 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

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
    Rock unit name Chitina Valley Batholith
    Rock description Chitina Valley Batholith
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -143.64557, 61.56272
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Comments on the geologic information

  • Geologic Description = Magnetite-rich skarn containing disseminated chalcopyrite developed in Triassic marble near Jurassic granodiorite pluton.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Nizina

Comments on the workings information

  • Workings / Exploration = Grab sample assayed (MacKevett, 1976): 0.06 ppm Au (AA), 1,500 ppm Cu, 7 ppmMo, > 20 percent Fe. Type of workings: surface

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011731
USGS Alaska Resource Data File ARDF MC061

Bibliographic references

  • 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 = MacKevett and others, 1978

General comments

Subject category Comment text
Deposit Model Name = Cu skarn
Deposit Other Comments = Not large enough to encourage development on the basis of iron content alone.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-AUG-1997 Leonard, K.R. U.S. Geological Survey
Reporter 04-AUG-1997 Elliott, R.L. U.S. Geological Survey
Reporter 04-AUG-1997 D. Singer U.S. Geological Survey
Reporter 04-AUG-1997 Richter, D.H. U.S. Geological Survey