|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||This occurrence is located on the steep tree-covered west shore of Hummer Bay. It is in the W1/2 section 1, T. 9 N., R. 6 E., of the Seward Meridian. This is location 84 of MacKevett and Holloway (1977), location 133 of Cobb and Tysdal (1980), and location S-160 of Jansons and others (1984). This location is accurate to within half a mile.|
This occurrence consists of several quartz veins as much as 3 inches wide in phyllitic, graphitic slate (Jansons and others, 1984) of the Valdez Group of Late Cretaceous age (Cobb and Tysdal, 1980). The bedrock strikes generally north-northeast, and the veins cross-cut the foliation. The quartz veins contain weathered carbonate minerals.The U.S. Bureau of Mines sampled barren-appearing quartz-carbonate veins in 1979. One sample contained 200 ppm copper; none contained any precious metal values (Hoekzema and Sherman, 1983).
|Geologic map unit||(-148.320285494363, 60.899114754195)|
|Mineral deposit model||Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Cretaceous or younger; veins cut rocks of the Valdez Group of Cretaceous age.|
|Workings or exploration||Surface stripping and opencuts were reported in 1915 (Johnson, 1916). The U.S. Bureau of Mines visited the site in 1979 but found no workings. They sampled the veins; sample 7026 contained 200 ppm copper (Hoekzema and Sherman, 1983).|
|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.
Johnson, B.L., 1916, Mining on Prince William Sound: U.S. Geological Survey Bulletin 642-D, p. 137-145.
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.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||7/23/2000|