|Quadrangle map, 1:250,000-scale||CV|
|Quadrangle map, 1:63,360-scale||D-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of about 2400 feet at the northeastern head of Dead Creek, near the toe of an unnamed glacier. It is in the W1/2 sec. 13, T. 11 S., R. 4 W., of the Copper River Meridian. The accuracy of the location is within 2000 ft. This occurrence is shown as site C-57 in Jansons and other (1984).|
Geologic descriptionThe country rocks at this occurrence are slate and graywacke of the Upper Cretaceous Valdez Group (Nelson and others, 1985). Jansons and others (1984) describe a 4-foot-wide shear zone in the slate and graywacke that contins a foot-wide zone of pyrite, sphalerite, and malachite. One chip sample contained 41 ppm Zn, and 7 ppm Cu, and a grab sample contained 1.23 percent Zn and 0.17 percent Cu.
|Geologic map unit||(-145.87198877113, 60.9094723995143)|
|Alteration of deposit||Minor oxidation of copper minerals.|
|Workings or exploration||
Site examined as part of a U.S. Bureau of Mines and U.S.G.S. mineral evaluation of the Chugach National Forest.One chip sample contained 41 ppm Zn, and 7 ppm Cu, and a grab sample contained 1.23 percent Zn and 0.17 percent Cu (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.
Nelson, S.W., Miller, M.L., Barnes, D.F., Dumoulin, J.A., Goldfarb, R.J., Koski, R.A., Mull, C.G., Pickthorn, W.J., Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral resource potential of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-A, 24 p., 1 plate, scale 1:250,000.
|Reporters||S.W. Nelson, Anchorage, AK|
|Last report date||6/10/2000|