Unnamed Occurrence (ARDF - CG022; south of Chignik), Alaska Peninsula District, Lake and Peninsula Borough, Alaska, USA
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Location: The approximate location of this occurrence is 1.5 miles south of the village of Chignik (Fields, 1977, locality 8). Site is accurate to within 2 miles.
Geology: This site represents a 3-square-mile color anomaly which generally corresponds in location to a Tertiary quartz diorite stock containing up to 0.25 percent disseminated pyrite. The stock cuts sedimentary rocks of the Tolstoy Formation (Eocene and Paleocene age). The siltstones and sandstones near the intrusive are hornfelsed and carry up to 5 percent pyrrhotite (Fields, 1977).
Workings: The area was examined by Bear Creek Mining Company during the period 1975-1976 (Fields, 1977).
Age: Tertiary.
Development Status: None
Deposit Model: Porphyry copper? (Cox and Singer, 1986; model 17)
Mineral List
2 entries listed. 2 valid minerals.
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References
Fields, E.D., 1977, 1976 Annual report: Alaska search, Chignik area-Bristol Bay region: Bear Creek Mining Company, 44 p., 22 map sheets. (Report held by the Aleut Corporation, Anchorage, Alaska.)
