Latitude: 63°6'20"N
Longitude: 144°44'9"W
Location: This occurrence is on the ridge at the headwaters of Willow Creek, a southwest-flowing tributary of the Chisna River. The occurrence is at an elevation of about 5,500 feet near peak 5770. The occurrence is near the center of the W1/2SW1/4 section 8, T. 21 S., R. 16 E., Fairbanks Meridian. It corresponds to locality 142 in table 2 of Nokleberg and others (1991); the location is probably accurate within 0.2 mile.
Geology: The rocks in the vicinity consist of meta-andesite porphyry of the Tetelna Volcanics of Pennsylvanian age (Nokleberg and others, 1991). The meta-andesite is locally stained with malachite; a grab sample assayed 0.64 percent copper, 15 parts per million (ppm) silver, and 0.20 ppm gold (Nokleberg and others, 1991).
Workings: Only limited surface sampling.
Age: Pennsylvanian or younger, on the basis of the age of host rocks.
Commodities (Major) - Cu; (Minor) - Ag, Au
Development Status: No
Deposit Model: Uncertain; polymetallic vein(s) (?) (Cox and Singer, 1986 model 22c).
References
Nokleberg, W.J., Lange, I.M., Roback, R.C., Yeend, Warren, and Silva, S.R., 1991, Map showing locations of metalliferous lode and placer mineral occurrences, mineral deposits, prospects, and mines, Mount Hayes quadrangle, eastern Alaska Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1996-C, 42 p., 1 sheet, scale 1:250,000.
Mineral List
2 entries listed. 2 valid minerals.
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