|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 occurrence is located on the northwest shore of Mummy Bay, 1.2 miles north-northwest of Oceanic seaplane base. It is in the NE1/4 section 35, T. 2 N., R. 9 E., of the Seward Meridian. This is location 248 of Tysdal (1978 [MF-880-A]) and location S-32 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
Geologic descriptionThe occurrence is hosted in sheared greenstone of the Orca Group of early Tertiary age (Nelson and others, 1985). Tysdal (1978 [MF-880-A]) reported iron- and malachite-stained sheared greenstone that contained 500 ppm copper, 300 ppm chrome, and 100 ppm zinc. No other information is published.
|Geologic map unit||(-147.832661637671, 60.2222315848999)|
|Mineral deposit model||Cyprus massive sulfide (Cox and Singer, 1986; model 24a)|
|Mineral deposit model number||24a|
|Age of mineralization||Tertiary or younger; the occurrence is in rocks of the Orca Group of Tertiary age.|
|Alteration of deposit||Basalt altered to greenstone.|
|Workings or exploration||Tysdal (1978 [MF-880-A]) reported iron- and malachite-stained sheared greenstone that contained 500 ppm copper, 300 ppm chrome, and 100 ppm zinc. No other information is published.|
|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.
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.
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.
|Reporters||Jeff A. Huber and Carol S. Huber (Anchorage)|
|Last report date||3/9/2001|