Palmer Creek No. 2 Occurrence, Hope District, Kenai Peninsula Borough, Alaska, USA
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Geology: The deposit consists of abundant thin quartz veins cutting graywacke of the Valdez Group of Late Cretaceous age (Nelson and others, 1985). The veins generally strike N62W to N85W and dip steeply to the north (Hoekzema and Sherman, 1983). They are intermittently exposed from this site southward for about 2 kilometers. A single grab sample collected by the U.S. Geological Survey contained 3 ppm silver, 10 ppm beryllium, and 370 ppm copper (Tysdal, 1978 [MF-880-A]). Samples collected by the U.S. Bureau of Mines assayed 0.09 ounce of silver per ton and 4 percent copper (Jansons and others, 1984).
Workings: The occurrence was first reported and sampled by Tysdal (1978 [MF-880-A]), who collected a grab sample that contained 3 ppm silver, 10 ppm beryllium, and 370 ppm copper. Samples collected by the U.S. Bureau of Mines contained 0.09 ounce of silver per ton, and 0.04 percent copper (Jansons and others, 1984). Trenches are reported nearby, but here there are no workings or improvements present.
Age: Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age.
Commodities (Major) - Ag; (Minor) - Be, Cu
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
1 entry listed. 1 valid mineral.
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Hoekzema, R.P., and Sherman, G.E., 1983, Mineral investigations in the Chugach National Forest, Alaska (Peninsula study area): U.S. Bureau of Mines in-house report; held at U.S. Bureau of Land Management Alaska State Office, Anchorage, 524 p. Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000. Mitchell, P.A., 1979, Geology of the Hope-Sunrise (gold) mining district, north-central Kenai Peninsula, Alaska: Stanford University Master of Science thesis, 123 p. Tysdal, R.G., 1978, Mines, prospects, and occurrences map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-880-A, 2 sheets, scale 1:250,000.