|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located on the east side of Cedar Bay in section 18, T. 10 N., R. 12 E., of the Seward Meridian. This is location 183 of Tysdal (1978 [MF-880-A]) and location S-115 of Jansons and others (1984). This location is accurate to within one mile.|
Geologic descriptionThe prospect is described as a 12-foot-wide shear zone in graywacke and Eocene muscovite-bearing granite. The zone contains chalcopyrite, pyrite, pyrrhotite, and sphalerite (Jansons and others, 1984). The workings on the prospect consist of two adits, one 42 feet long and the other 280 feet long. Thirteen grab samples collected by the U.S. Bureau of Mines contained as much as 9 percent zinc, 0.57 percent copper, 0.29 percent lead, and 30 ppm silver (Jansons and others, 1984).
|Geologic map unit||(-147.390071385951, 60.9572718142667)|
|Mineral deposit model||Polymetallic veins (Cox and Singer, 1986; model 22c)|
|Mineral deposit model number||22c|
|Age of mineralization||Eocene or younger; the shear zone cuts Eocene granite.|
|Workings or exploration||The workings on the prospect consist of two adits, one 42 feet long and one 280 feet long. Thirteen grab samples collected by the U.S. Bureau of Mines contained from 22 ppm to 9 percent zinc, 6 ppm to 0.57 percent copper, 10 ppm to 0.29 percent lead, and 0.3 ppm to 30 ppm silver (Jansons and others, 1984).|
|Indication of production||None|
Cobb, E.H., and Tysdal, R.G., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Blying Sound and Seward quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-621, 276 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.
Johnson, B.L., 1918, Mining on Prince William Sound: U.S. Geological Survey Bulletin 662-C, p. 183-192.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||3/9/2000|