|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located near the head of Cedar Bay in the N1/2 section 8, T. 10 N., R. 12 E., of the Seward Meridian. This is location 184 of Tysdal (1978 [MF-880-A]) and location S-116 of Jansons and others (1984). This location is accurate to within half a mile.|
The prospect is a 6- to 70-foot- wide shear zone in silicified graywacke and Eocene muscovite-bearing granite. The zone contains quartz veins carrying chalcopyrite, covellite, pyrite, and sphalerite (Jansons and others, 1984). The largest vein is 20 centimeters thick and 1 to 1.5 meters long. It contains mostly pyrite along with traces of chalcopyrite and covellite (Tysdal, 1978 [MF-880-A]).The single working on the prospect is a 700-foot adit. Three grab samples collected by the U.S. Bureau of Mines contained from 30 to 825 ppm copper (Jansons and others, 1984).
|Geologic map unit||(-147.3669722265, 60.973969000718)|
|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.|
|Alteration of deposit||Silicification.|
|Workings or exploration||The single working on the prospect is a 700-foot-long adit. Three grab samples collected by the U.S. Bureau of Mines contained from 30 to 825 ppm copper (Jansons and others, 1984).|
|Indication of production||None|
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.
Moffit, F.H., and Fellows, R.E., 1950, Coper deposits of the Prince William Sound district, Alaska: U.S. Geological Survey Bulletin 963-B, p. 47-80.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||1/30/2000|