|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||B-8|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Stetson Creek is a north-flowing tributary of Cooper Creek that is located about 2 miles from the confluence of Cooper Creek and Kenai River. The placer section of the stream is about 1.5 miles long and is located in sections 8, 17, 18, and 19, of T. 4 N., R. 3 W., of the Seward Meridian, but most of the gold has been recovered at the map location in the SW1/4 section 8. This is location 24 of Cobb and Tysdal (1980) and location P-85 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
Stetson Creek occupies a steep, narrow valley with a bedrock gorge developed along its lower section. Bedrock is mapped as Valdez Group of Late Cretaceous age (Nelson and others, 1985). The placer section extends from the confluence of Stetson and Cooper Creeks upstream for about 1.5 miles (Tysdal, 1978 [MF-880-B]). Gravel deposited below a series of falls is reported to contain coarse gold (Jansons and others, 1984). Bench gravels along the lower creek just above its confluence with Cooper Creek are as much as 50 feet thick and moderately stratified and have a high clay content. In the 1950s high bench deposits near the confluence with Cooper Creek were hydraulically mined. Suction dredging has occurred sporadically since that time.Total production is estimated to be less than 300 ounces of gold (Jansons and others, 1984). Two samples from the stream channel contained a trace to 0.0043 ounce of gold per cubic yard (Jansons and others, 1984).
|Geologic map unit||(-149.851242595917, 60.4452140089961)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary; the gold is in the stream channel and in bench gravel.|
|Workings or exploration||Historically, work on this creek has consisted of small hydraulic operations and hand mining. In more recent time, small-scale suction dredges have worked the active stream channel. Gold recovered in the creek consists of both coarse nuggets as heavy as about 2 ounces and fine gold (Cobb and Tysdal, 1980). Total production is estimated to be less than 300 ounces of gold (Jansons and others, 1984). Two samples from the stream channel of Stetson Creek contained a trace to 0.0043 ounce of gold per cubic yard (Jansons and others, 1984).|
|Indication of production||Yes; small|
|Production notes||Cobb and Tysdal (1980) estimated total production from this creek as less than 769 fine ounces. Jansons and others (1985) estimated total production to be less than 300 ounces.|
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.
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.
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.
Mendenhall, W.C., 1900, A reconnaissance from Resurrection Bay to the Tanana River, Alaska, in 1898, in Walcott, C.D., Twentieth annual report of the United States Geological Survey, 1898-1899: Part VII - explorations in Alaska in 1898: U.S. Geological Survey Annual Report 20-VII, p. 265-340.
Moffit, F.H., 1905, Gold placers of Turnagain Arm, Cook Inlet, in Brooks, A.H., Report on progress of investigations of mineral resources of Alaska in 1904, U.S. Geological Survey Bulletin 259, p. 90-99.
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 and Carol S. Huber (Anchorage)|
|Last report date||3/7/2001|