|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is at an elevation of 545 feet on the northeast valley wall of Avery River, about 2 miles from Port Wells. It is in the SE1/4 section 6, T. 10 N., R. 9 E., of the Seward Meridian. This is location S-139 of Jansons and others (1984). This prospect is mentioned in Cobb and Tysdal (1980, p. 33), but no location number is given. This location is accurate to within a quarter of a mile.|
The bedrock in the area of the prospect is undivided sedimentary strata of the Valdez Group of Late Cretaceous age (Nelson and others, 1985). The host rock is a black slate that shows considerable fracturing and strike-slip faulting. The mineralization consists of a group of lenticular quartz veins that strike N54E and dip 83NW.The workings consist of a 108-foot adit, a 50-foot shaft and three surface cuts near the portal (Stewart, 1931). The shaft was sunk on a 3-foot-wide quartz vein that assayed as much as $50.00 per ton gold (gold at $20.67 per ounce) (Stewart, 1931). No other data or assay results are reported.
|Geologic map unit||(-147.914851556274, 60.9841425154938)|
|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; the veins cut rocks of the Valdez Group of Late Cretaceous age.|
|Workings or exploration||
The workings consist of a 108-foot adit at 530 feet elevation, a 50-foot shaft, and three surface cuts located 170 feet southwest of the portal (Stewart, 1931). The shaft was sunk on a 3-foot-wide quartz vein that assayed as much as $50.00 per ton gold (gold at $20.67 per ounce) (Stewart, 1931). No other data or assay results are reported.The U.S. Bureau of Mines searched for the prospect in 1980 but did not locate it. They collected no samples from the area (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.
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., 1931, Report on cooperation between the Territory of Alaska and the United States in making mining investigations and in the inspection of mines for the biennium ending March 31, 1931: Alaska Territorial Department of Mines Annual Report 1931, 145 p.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||1/20/2000|