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  3. Alaska Resource Data File (ARDF)

Unnamed (south of Iron Creek)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Co; Cu; Ni
Other commodities Cr

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-5
Latitude 62.2814
Longitude -149.0367
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 4,000 feet, south of Iron Creek, in the SE1/4SW1/4 sec. 2, T. 25 N., R. 2 E., Seward Meridian. The location is accurate to within 1/2 mile.

Geologic setting

Geologic description

The rocks at this occurrence are mainly altered Paleozoic(?) mafic metavolcanic rocks and serpentinite(?). No sulfides are visible (Csejtey and Miller, 1978). Rock samples contain up to 2,000 parts per million cobalt, 700 parts per million copper, and 1,500 parts per million nickel; chromium exceeds the 5,000-parts-per-million, detection limit (Miller and others, 1978).
Geologic map unit (-149.038916025233, 62.2809027098641)
Mineral deposit model Basaltic copper (Cox and Singer, 1986; model 23)
Mineral deposit model number 23
Alteration of deposit The type of alteration in the Paleozoic(?) mafic metavolcanic rocks 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