|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This placer mine is located in section 3, T. 10 N., R. 2 E., of the Seward Meridian. The creek occupies a fairly wide and gentle U-shaped valley along most of its length but flows through a short, steep bedrock canyon near its junction with Glacier Creek. This is location 134 of Cobb and Richter (1972), location 181 of MacKevett and Holloway (1977), location 4 of Tysdal (1978 [MF-880-B]), location 134 of Cobb and Tysdal (1980), and location P-94 of Jansons and others (1984). This location is accurate to within 300 feet.|
Geologic descriptionBedrock in the Winner Creek drainage is sedimentary rock of the Valdez Group of Late Cretaceous age (Nelson and others, 1985). The deposits in the stream channel consist of well-stratified and washed alluvium; local bench deposits consist of clay-rich, cemented glacial or fluvial-glacial gravels. The gravels contain some quartz diorite cobbles (Park, 1933). The clay-rich gravels contained fairly coarse (three-sixteenths of an inch) gold at one sample site (Jansons and others, 1984).
|Geologic map unit||(-149.071779155809, 60.984629853815)|
|Mineral deposit model||Placer Au (alluvial) (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||
A hand placer and hydraulic operation recovered gold from stream and bench gravels between 1898 and 1917 (Tysdal, 1978 [MF-880-B]). Since then hand placer methods and suction dredges have been used sporadically (Jansons and others, 1984).The U.S. Bureau of Mines collected samples on lower Winner Creek (Jansons and others, 1984). Alluvium from the active stream channel contained 0.002 ounce of gold per cubic yard; the bench gravels contained 0.0283 ounce of gold per cubic yard. Samples collected from the upper and middle portions of Winner Creek contained trace amounts of gold.
|Indication of production||Yes; small|
|Production notes||The total estimated production, from the lower quarter-mile of the creek, is 400 ounces, of which less than 25 ounces has been produced since 1975 (Jansons and others, 1984).|
Brooks, A.H., 1915, Mineral resources of Alaska; report on progress of investigations in 1914: U.S. Geological Survey Bulletin 622, 380 p.
Brooks, A.H., 1916, Mineral resources of Alaska, report on progress of investigations in 1915: U.S. Geological Survey Bulletin 642, 279 p.
Cobb, E.H., and Richter, D.H., 1972, Metallic mineral resources map of the Seward quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-466, 2 sheets, scale 1:250,000.
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., 1912, Mineral resources of Alaska, report on progress of investigations in 1911--Gold deposits of the Seward-Sunrise region, Kenai Peninsula: U.S. Geological Survey Bulletin 520-E, p. 131-173.
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.
Martin, G.C., Johnson, B.L., and Grant, U.S., 1915, Geology and mineral resources of Kenai Peninsula, Alaska: U.S. Geological Survey Bulletin 587, 243 p.
Moffit, F.H., 1906, Gold fields of the Turnagain Arm region: U.S. Geological Survey Bulletin 277, p. 7-52.
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 (Anchorage)|
|Last report date||4/16/2000|