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  3. Alaska Resource Data File (ARDF)

Unnamed (north of Walker Lake)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite
Gangue minerals quartz; tourmaline

Geographic location

Quadrangle map, 1:250,000-scale SP
Quadrangle map, 1:63,360-scale B-3
Latitude 67.262
Longitude -154.466
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 4900 feet on a ridge about 4 miles north of Walker Lake. It is in S1/2 of sec. 32, T. 22 N., R. 20 E., of the Kateel River Meridian. Location is accurate to within 500 ft. The side corresponds to locality 49 of Grybeck and Nelson (1981).

Geologic setting

Geologic description

This occurrence consists of a zone about 10 feet thick in Paleozoic calc-silicate rocks (Grybeck and Nelson, 1981). The zone consists of white quartz interlayered with limonitic gossan. The quartz contains disseminated chalcopyrite and tourmaline.
Geologic map unit (-154.468758955424, 67.2614991878637)

Production and reserves

Indication of production None

Additional comments

Located within Gates of the Arctic National Park.

References

MRDS Number A011919

References

Grybeck, D.J., and Nelson, S.W., 1981, Mineral deposit map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-F, 1 sheet, scale 1:250,000.
Nelson, S.W., and Grybeck, D.J., 1980, Geologic map of the Survey Pass quadrangle, Brooks Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1176-A, 2 sheets, scale 1:250,000.
Reporters S.W. Nelson (Anchorage, Alaska)
Last report date 9/21/1999