Woods Creek Mine, Fortymile District, Southeast Fairbanks Borough, Alaska, USA
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Geology: The rocks in the vicinity of Woods Creek are Paleozoic amphibolite-facies paragneiss, schist, amphibolite, and lesser quartzite and orthogneiss (Szumigala and others, 2002). These units are tightly folded and are cut by a northeast-trending high-angle fault; the creek follows the trace of the fault. Placer gold was mined on Woods Creek in the early 1900's, notably in 1907 (Prindle, 1909). Prindle (1908) included Woods Creek in production statistics for the Canyon Creek drainage, and Canyon Creek and its tributaries produced 447 fine ounces of gold from 1904 to 1907. Placer mining occurred on Woods Creek in 1969 (Asher, 1970) and during the 1990's (Swainbank and others, 1993; Burleigh and Lear, 1994; Yeend, 1996). A small open-cut operation was active on Woods Creek in 2000.
Workings: Placer gold was mined on Woods Creek in the early 1900's, notably in 1907 (Prindle, 1909). Placer mining occurred on Woods Creek in 1969 (Asher, 1970) and during the 1990's (Swainbank and others, 1993; Burleigh and Lear, 1994; Yeend, 1996). A small open-cut operation was active on Woods Creek in 2000.
Age: Quaternary.
Production: Canyon Creek and its tributaries (including Woods Creek) produced 447 fine ounces of gold from 1904 to 1907 (Prindle, 1908).
Commodities (Major) - Au
Development Status: Yes; small
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a).
Mineral List
1 entry listed. 1 valid mineral.
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References
Asher, R.R., 1970, Geochemistry and geology, Boundary area, Fortymile district, Eagle A-1 quadrangle, Alaska: Alaska Division of Mines and Geology Geochemical Report 23, 32 p., 2 sheets, scale 1:63,360. Burleigh, R.E., and Lear, K.G., 1994, Compilation of data for Phase I of the mineral resource evaluation of the Bureau of Land Management Black River and Fortymile subunits: U.S. Bureau of Mines Open-File Report 48-94, 116 p. Cobb, E.H., 1972, Metallic mineral resources map of the Eagle quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-393, 1:250,000 scale, 1 sheet. Cobb, E.H., 1977, Summary of references to mineral occurrences in the Eagle quadrangle, Alaska: U.S. Geological Survey Open-File Report 77-845, 122 p. Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 sheet, scale 1:1,000,000 Foster, H.L., 1969, Reconnaissance geology of the Eagle A-1 and A-2 quadrangles, Alaska: U.S. Geological Survey Bulletin 1271-G, p. G1-G30 Powers, J.B., 1935, Brief history of the Fortymile and Eagle Mining Districts to 1935: Alaska Territorial Department of Mines Mineral Report MR 60-2, 19 p. Prindle, L.M., 1908, The Fortymile gold-placer district, in Brooks, A.H., ed., Mineral Resources of Alaska, Report on progress of investigations in 1907: U.S. Geological Survey Bulletin 345, p. 187-197. Prindle, L.M., 1909, The Fortymile quadrangle, Yukon-Tanana region, Alaska: U.S. Geological Survey Bulletin 375, 52 p. Swainbank, R.C., Bundtzen, T.K., Clough, A.H., Hansen, E.W., and Nelson, M.G., 1993, Alaska's mineral industry, 1992: Alaska Division of Geological and Geophysical Surveys Special Report 47, 80 p. Szumigala, D.J., Newberry, R.J., Werdon, M.B., Athey, J.E., Flynn, R.L., and Clautice, K.C., 2002, Bedrock geologic map of the Eagle A-1 quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Preliminary Interpretive Report 2002-1b, 1 sheet, scale 1:63,360. Yeend, W.E., 1996, Gold placers of the historical Fortymile River region, Alaska: U.S. Geological survey Bulletin 2125, 75 p., 1 sheet, 1:250,000 scale.
