|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located a shallow, U-shaped valley in the easternmost arm at the south end of Herring Bay at an elevation of about 500 feet. It is in the W1/2 section 28, T. 4 N., R. 10 E., of the Seward Meridian. This is location S-73 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
Geologic descriptionThe prospect consists of a heavily iron-stained shear zone cutting greenstone. The zone contains minor pyrite and is exposed for 80 feet in a stream bottom (Kurtak and Jeske, 1986). This shear zone trends N 15 E and dips 70 to 80 E (Kurtak and Jeske, 1986). Nelson and others (1985) mapped the greenstone county rock as Orca Group of early Tertiary age. Two random chip samples from the shear zone contained from 80 to 95 ppm copper and 50 to 150 ppm zinc (Kurtak and Jeske, 1986).
|Geologic map unit||(-147.732029225077, 60.407221958361)|
|Mineral deposit model||Cyprus massive sulfide (Cox and Singer, 1986; model 24a)|
|Mineral deposit model number||24a|
|Age of mineralization||Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.|
|Workings or exploration||Two adits are reported: one is 5 feet long at an elevation of 450 feet, and the other is 6 feet long at an elevation of 550 feet (Kurtak and Jeske, 1986). Two random chip samples from the shear zone contained from 80 to 95 ppm copper and 50 to 150 ppm zinc (Kurtak and Jeske, 1986).|
|Indication of production||Undetermined|
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||12/7/2001|