Unnamed (east of south tributary of Fog Creek) (ARDF #TK055) Co, Cu, Ni

Unnamed (east of south tributary of Fog Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Co; Cu; Ni
Other commodities	Ti

Geographic location

Quadrangle map, 1:250,000-scale	TK
Quadrangle map, 1:63,360-scale	C-4
Latitude	62.6917
Longitude	-148.5569
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is at an elevation of about 3,000 feet on the east, valley wall of a south tributary of upper Fog Creek. It is approximately 1 mile west of hill 4704, about 0.2 mile north of the center of sec. 17, T. 30 N., R. 5 E., Seward Meridian. The location is accurate to within 1/4 mile.

Geologic setting

Geologic description This occurrence consists of boxwork, quartz veins in orange-weathering Triassic(?) greenstone breccia. A sample of the breccia contains 206 parts per million copper, 91 parts per million nickel, 55 parts per million cobalt, and 1.15 percent titanium (J. Schmidt, written communication, 2001).
Geologic map unit	(-148.559135806301, 62.6912254034049)
Age of mineralization	Occurs in Triassic(?) greenstone breccia.
Alteration of deposit	Iron-oxide staining.

Production and reserves

Workings or exploration	Only surface sampling by U.S. Geological Survey (J. Schmidt, written communication, 2001).
Indication of production	None

References

References 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.
Reporters	R.K. Rogers (U. S. Geological Survey contractor)
Last report date	10/4/2002