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  3. Alaska Resource Data File (ARDF)

Unnamed (south of Talkeetna River)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu; Zn
Other commodities Ni

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale C-4
Latitude 62.5075
Longitude -148.8938
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,350 feet; it is 1/2 mile south of the Talkeetna River, and 2.6 miles south of the south end of lake 2710,in the NE1/4NE1/4 sec. 21, T. 28 N., R. 3 E., Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of altered Paleozoic(?) greenstone. No sulfide minerals are visible (Csejtey and Miller, 1978). Samples of the altered greenstone contain 1,000 parts per million copper, 300 parts per million zinc, and 100 parts per million nickel (Miller and others, 1978).
Geologic map unit (-148.896030410593, 62.5070143627192)
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 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