|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||A-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located in the NW1/4 section 10, T. 2 S., R. 9 E., of the Seward Meridian, at an elevation of about about 1,000 feet. It is in a glacial cirque, about 0.5 mile south of Snowy Lake. This is location S-5 of Jansons and others (1984). This location is accurate to within 300 feet.|
Geologic descriptionNelson and others (1985) mapped the bedrock in this area as Orca Group of early Tertiary age. The prospect is on the northwest limb of a shallowly dipping, northeast-plunging antiform (Stejer, 1956). The prospect consists of chalcopyrite-pyrrhotite quartz stringers with rare native copper hosted in graywacke. The workings on the prospect consist of a single open-cut (Kurtak and Jeske, 1986). The U.S. Bureau of Mines collected two grab samples from the workings; one sample contained 1.4 percent copper, 19.5 ppm silver, and 0.6 ppm gold; the other sample contained 100 ppm copper, 5.5 ppm silver, and 0.09 ppm gold (Kurtak and Jeske, 1986).
|Geologic map unit||(-147.895410242845, 60.0190485543511)|
|Mineral deposit model||Besshi massive sulfide (Cox and Singer, 1986; model 24b)|
|Mineral deposit model number||24b|
|Age of mineralization||Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.|
|Workings or exploration||The workings on the prospect consist of a single, open cut (Kurtak and Jeske, 1986). The U.S. Bureau of Mines collected two grab samples from the workings; one sample contained 1.4 percent copper, 19.5 ppm silver, and 0.6 ppm gold; the other sample contained 100 ppm copper, 5.5 ppm silver, and 0.09 ppm gold (Kurtak and Jeske, 1986).|
|Indication of production||None|
Additional commentsKennecott Copper Corporation company records from 1916 to 1971 mention this prospect. These records can be inspected upon request at the Bureau of Land Management office in Anchorage, Alaska.
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.
Kurtak, J.M., and Jeske, R.E., 1986, Mineral investigations in the Chugach National Forest, Alaska (Islands area): U.S. Bureau of Mines Open-File Report 54-86, 302 p., 1 sheet, scale 1:63,360.
|Reporters||Jeff A. Huber and Carol S. Huber (Anchorage)|
|Last report date||9/21/2001|