|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located at an elevation of about 800 feet, in the SW1/4 section 9, T. 10 N., R. 7 E., of the Seward Meridian. It is about three-quarters of a mile west of the Granite mine (SR085). This is location 121 of Tysdal (1978 [MF-880-A]) and location S-148 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
The prospect consists of a 3- to 12-inch-wide quartz vein that strikes N50W and dips 85NE. The vein is traceable for about 100 feet on the surface. The hanging wall consists of Eocene granite, and the foot wall consists of sandstone of the Valdez Group of Late Cretaceous age (Hoekzema and Sherman, 1983). The vein contains angular fragments of bedrock and small amounts of pyrite and gold. Two samples collected in 1931 respectively contained 0.02 and 0.1 ounce of gold per ton and 2.54 and 0.8 ounces of silver per ton (Stewart, 1933).Workings on the prospect consist of a 220-foot adit at 720 feet above sea level and a shaft of unknown depth at 860 feet above sea level.
|Geologic map unit||(-148.23367616682, 60.967923630372)|
|Mineral deposit model||Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Eocene or younger; the vein cuts Eocene granite.|
|Workings or exploration||Two samples collected in 1931 respectively contained 0.02 and 0.1 ounce of gold per ton and 2.54 and 0.8 ounces of silver per ton (Stewart, 1933). Workings consist of a 220-foot-long adit at 720 feet above sea level and a shaft of unknown depth at 860 feet above sea level (Johnson, 1914 [?B 592-G, p. 195-236]).|
|Indication of production||None|
Cobb, E.H., and Tysdal, R.G., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Blying Sound and Seward quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-621, 276 p.
Hoekzema, R.P., and Sherman, G.E., 1983, Mineral investigations in the Chugach National Forest, Alaska (Peninsula study area): U.S. Bureau of Mines in-house report; held at U.S. Bureau of Land Management Alaska State Office, Anchorage, 524 p.
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.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
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.
Stewart, B.D., 1933, Mining investigations and mine inspection in Alaska, Biennium ending March 31, 1933: Alaska Territorial Department of Mines Annual Report 1933B, 196 p.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||1/9/2000|