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Unnamed (near head of Kakivilik Creek)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Pb; Zn
Other commodities Ag; Cu
Ore minerals chalcopyrite; galena; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale KL
Quadrangle map, 1:63,360-scale A-4
Latitude 68.16
Longitude -154.965
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about 6.8 miles north-northeast of the pass between the small lake at the divide between a small tributary of Kakivilak Creek and the head of Itilyiargiok Creek. It is about 0.4 mile northwest of the center of section 22, T. 32 N., R. 17 E. The location is accurate to within about a mile.

Geologic setting

Geologic description

The rocks in the area consist of shale with minor interbedded graywacke, quartzite, and conglomerate of the Upper Devonian Hunt Fork Shale. The U.S. Bureau of Mines (Kurtak and others, 1995) resampled anomalous samples collected by the U.S. Geological Survey (Sutley and others, 1984). The Bureau of Mines collected several samples of quartz veins with galena, chalcopyrite, and sphalerite. One vein was 1.5 meters thick but its extent is unknown. The samples contained 0.25 to 3.6 percent lead and 1.1 to 7.7 percent zinc; one sample contained 2,729 parts per million copper and another 2.8 grams of silver per tonne.
Geologic map unit (-154.967869390413, 68.1595199928668)
Mineral deposit model Lead-zinc-quartz veins.
Age of mineralization Upper Devonian or younger based on the age of the host rock.
Alteration of deposit Not noted.

Production and reserves

Workings or exploration Only sampling and mapping by the U.S. Geological Survey and U.S. Bureau of Mines.
Indication of production None
Reserve estimates None.
Production notes None.

Additional comments

The occurrence is in the Gates of the Arctic National Park which is closed to prospecting and mining.
MAS No. 0020200006

References

MRDS Number A106137

References

Kurtak, J.M., Meyer, M.P., Hicks, R.W., Werdon, M.B., and Mull, C.G., 1995, Mineral investigations in the Colville Mining District and southern National Petroleum Reserve in Alaska: U.S. Bureau of Mines Open-File Report 8-95, 217 p., 1 sheet, scale 1:250,000.
Sutley, S.J., Duttweiler, K.A., and Hopkins, R.T., 1984, Analytical results and sample locality map of stream-sediment and panned concentrate samples from the Killik River 1 degree by 3 degree quadrangle, Alaska: U.S. Geological Survey Open-File Report 84-406, 20 p.
Reporters J.M. Schmidt (U.S. Geological Survey); K.D. Kelley (U.S. Geological Survey); D.J. Grybeck (Contractor, U.S. Geological Survey)
Last report date 4/18/2010