Hillside Quartz; Hillside; Frenchy Creek mine Prospect, Hope District, Kenai Peninsula Borough, Alaska, USA
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Geology: Nelson and others (1985) have mapped the bedrock in this area as undifferentiated sedimentary rocks of the Valdez Group of Late Cretaceous age. The deposit consists of several quartz veins of undetermined thickness; these strike N70W and dip steeply south. The vein contains arsenopyrite, pyrite, sphalerite, and gold (Tysdal, 1978 [MF-880-A]). The U.S. Bureau of Mines sampled this prospect in 1979; they collected one grab sample that assayed a trace of gold and 0.02 ounce of silver per ton (Jansons and others, 1984).
Workings: Workings consist of several prospect pits, and improvements consist of a trail. The U.S. Bureau of Mines sampled the prospect in 1979. They collected a grab sample that assayed a trace of gold and 0.02 ounce of silver per ton (Jansons and others, 1984).
Age: Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age.
Commodities (Major) - Au; (Minor) - Ag, Zn
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Mineral List
4 entries listed. 4 valid minerals.
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References
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, 1981, 1979 Bureau of Mines sample sites and analytical results for samples collected in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Open File Report 83-81, 229 p. 5 sheets. 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. Johnson, B.L., 1918, Copper deposits of the Latouche and Knight Island districts, Prince William Sound: U.S. Geological Survey BuIletin 662-C, p. 193-220. Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000. 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.