|Quadrangle map, 1:250,000-scale||EA|
|Quadrangle map, 1:63,360-scale||C-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Ben Creek is a small northeast tributary of Slate Creek . Wedow and others (1954) found monazite and allanite in samples of panned concentrate at the mouth of Ben Creek, in section 4, T. 3 S., R. 25 E., of the Fairbanks Meridian. The location of placer gold mining on Ben Creek is not reported. Ben Creek is locality 40 of Cobb (1972 [MF-393]), locality 4 of Eberlein and others (1977), and locality 24 of Burleigh and Lear (1994).|
Geologic descriptionThe rocks along Ben Creek are granitic rocks of probable Mesozoic age and Paleozoic amphibolite-facies schist, quartzite, and marble (Foster, 1976). Monazite and allanite were found in heavy mineral concentrates from Ben Creek, but no anomalous radiation was detected in 1949 during 6- to 7-mile-long radioactivity traverses in the drainage (Wedow and others, 1954). The source of the monazite and allanite presumably is granitic rocks (Wedow and others, 1954). Biotite from the Ruby Creek granite gave a 40Ar/39Ar plateau age of 102.1 +/- 0.4 Ma (Newberry and others, 1996). Small-scale placer gold mining on Ben Creek occurred in 1967 (Alaska Division of Mines and Minerals, 1967).
|Geologic map unit||(-142.724017446674, 64.6795583944383)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Monazite and allanite were found in heavy mineral concentrates from Ben Creek, but no anomalous radiation was detected in 1949 during 6- to 7-mile-long radioactivity traverses in the drainage (Wedow and others, 1954). Small-scale placer gold mining on Ben Creek occurred in 1967 (Alaska Division of Mines and Minerals, 1967).|
|Indication of production||Yes; small|
Williams, J.A., 1967, Report of the Division of Mines and Minerals for the year 1966: Alaska Division of Mines and Minerals Annual Report 1966, 115 p.
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., 1976, Geologic map of the Eagle quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series, Map 922, 1 sheet, scale 1:250,000.
Newberry, R.J., Layer, P.W., Burleigh, R.E., and Solie, D.N., 1996, New 40Ar/39Ar dates for intrusions and mineral prospects in the eastern Yukon-Tanana terrane, Alaska - Regional patterns and significance, in Gray, J.E., and Riehle, J.R., eds., Geological Studies in Alaska by the U.S. Geological Survey, 1996: U.S. Geological Survey Professional Paper 1595, p. 131-159.
|Reporters||M.B. Werdon; R.L. Flynn|
|Last report date||5/1/2002|