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Kulik Kopper

Prospect, Inactive

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Commodities and mineralogy

Main commodities Cu
Other commodities Ag; Zn
Ore minerals chalcopyrite; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MK
Quadrangle map, 1:63,360-scale D-3
Latitude 58.9119
Longitude -154.8909
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Kulik Kopper prospect is at an elevation of about 2,000 feet on the south side of upper Kulik Lake. The prospect is in the NE1/4 sec. 2, T. 15 S., R. 34 W., of the Seward Meridian. The location is accurate within one-quarter mile.

Geologic setting

Geologic description

The Kulik Kopper prospect consists of pyrite- and chalcopyrite-bearing quartz veins which crosscut the Early Jurassic Talkeetna Formation that consists mainly of volcanic and volcaniclastic rocks (Riehle and others, 1993). These rocks are propylitically altered near the veins. Tertiary plutons containing disseminated pyrite crop out in the drainage basin a few 100 yards south of the prospect. The pluton is marked by phyllic alteration. Samples collected by Church, Riehle, and Goldfarb (1993) contain up to 1,000 parts per million (ppm) copper, 340 ppm zinc, and 2 ppm silver. Several prospect pits were dug by George Pfaff in 1966 over an area of several acres.
Geologic map unit (-154.892979185123, 58.9112072349385)
Mineral deposit model Polymetallic vein (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Age of mineralization Lower Jurassic or younger, the pyrite- and chalcopyrite-bearing quartz veins cut the Early Jurassic Talkeetna Formation.
Alteration of deposit The volcanic and volcaniclastic rocks are propylitically altered near the veins; the pluton is marked by phyllic alteration.

Production and reserves

Workings or exploration Several prospect pits were dug by George Pfaff in 1966 over an area of several acres.
Indication of production None

References

References

Church, S.E., Riehle, J.R., and Goldfarb, R.J., 1993, Interpretation of exploration geochemical data for the Mount Katmai quadrangle, and adjacent parts of the Afognak and Naknek quadrangles, Alaska: U.S. Geological Survey Bulletin 2020, 67 p., 3 plates, scale 1:250,000.
Church, S.E., Riehle, J.R, Magoon, L.B., and Campbell, D.L., 1992, Mineral and energy resource assessment maps of the Mount Katmai, Naknek, and western Afognak quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 2021-F, 22 p., 2 sheets, scale 1:250,000.
Riehle, J.R., Detterman, R.L. Yount, M.E., and Miller, J.W., 1993, Geologic map of the Mount Katmai quadrangle and adjacent parts of the Naknek and Afognak quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigations Map I-2204, 1 sheet, scale 1:250,000.
Reporters F.H. Wilson, S.E. Church, and D.P. Bickerstaff (U.S. Geological Survey)
Last report date 8/31/2005