|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 in the SW1/4 section 11, T. 2 S., R. 9 E., of the Seward Meridian. It is near the shoreline about 0.8 mile northeast of Reynolds Peak. This is location 265 of Tysdal (1978 [MF-880-A]) and location S-8 of Jansons and others (1984). The location is accurate to within a quarter of a mile.|
Geologic descriptionThe occurrence consists of a limonite-stained gossan that contains pyrite and chalcopyrite. The gossan zone is 4 feet wide and more than 45 feet long (Tysdal, 1978 [MF-880-A]). Tysdal (1978 [MF-880-A]) reported a semiquantitative spectrographic analysis of the gossan is 700 ppm copper, and 500 ppm zinc. The host rock is altered slate and sandstone of the Orca Group of early Tertiary age (Nelson and others, 1985).
|Geologic map unit||(-147.863599326076, 60.0150472742366)|
|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.|
|Alteration of deposit||The host rock is altered, but the type of alteration is not reported (Tysdal, 1978 [MF-880-A]).|
|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||12/16/2000|