|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 14, T. 2 S., R. 9 E., of the Seward Meridian. It is near sea level along the shoreline, 0.7 mile southeast of Reynolds Peak, Latouche Island. This is location 267 of Tysdal (1978 [MF-880-A]) and location S-6 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
Geologic descriptionThe occurrence consists of two zones: a mineralized graywacke and a shear zone. The mineralized graywacke zone contains small bunches and stringers of chalcopyrite scattered though it. The zone varies from 4 to 40 feet wide and is traceable for some distance (Johnson, 1916 [B 662-C, p. 210-211]). North of the mineralized graywacke zone a 4-foot-wide shear zone is exposed for a short distance. This zone contains chalcopyrite, pyrrhotite, and sphalerite. Both zones are subparallel to the northeasterly strike and westerly dip of the host rock, which is graywacke of the Orca Group of early Tertiary age (Nelson and others, 1985).
|Geologic map unit||(-147.868098018821, 60.0012418335975)|
|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.|
|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.
Johnson, B.L., 1918, Copper deposits of the Latouche and Knight Island districts, Prince William Sound: U.S. Geological Survey BuIletin 662-C, p. 193-220.
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||9/21/2001|