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Unnamed (northeast of VABM Sunshine)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag; Co; Cu; Ni; Zn

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale A-6
Latitude 62.1639
Longitude -149.6916
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located just above treeline between Sheep Creek and the South Fork of Montana Creek, approximately 600 meters northeast of VABM Sunshine. The location is accurate to within 1/4 mile. This is locality 92 of Csejtey and Miller (1978).

Geologic setting

Geologic description

Paleozoic(?) greenstone (meta-andesite?) at this occurrence is altered but no sulfides are visible (Csejtey and Miller, 1978). A sample of greenstone contains 2 parts per million silver, 100 parts per million cobalt, 300 parts per million copper, 100 parts per million nickel, and 300 parts per million zinc (Miller and others, 1978).
Geologic map unit (-149.693836385671, 62.16338941213)
Mineral deposit model Basaltic copper (Cox and Singer, 1986; model 23)
Mineral deposit model number 23
Alteration of deposit The greenstone is altered but the type of alteration is not specified (Csejtey and Miller, 1978).

Production and reserves

Workings or exploration Only limited sampling by the U.S. Geological Survey (Miller and others, 1978).
Indication of production None

References

References

Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 22 p., 1 sheet, scale 1:250,000.
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, Larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p., 3 sheets, scale 1:250,000.
Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/4/2002