|Quadrangle map, 1:250,000-scale||EA|
|Quadrangle map, 1:63,360-scale||B-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Flat Creek is a small north tributary of the lower Fortymile River; it is about 10 miles west of the Canadian border. The location of placer gold mining on Flat Creek is uncertain; the coordinates are near the mouth of Flat Creek, in section 23, T. 7 S., R. 32 E., of the Fairbanks Meridian. Flat Creek is locality 61 of Cobb (1972 [MF-393]) and locality 25 of Eberlein and others (1977).|
The rocks along Flat Creek are Paleozoic amphibolite-facies gneiss and amphibolite (Foster, 1976). Extensive Quaternary terrace and alluvial gravel deposits are present near the mouth of Flat Creek; these terraces are as much as several hundred feet above the creek (Foster and Keith, 1968).Placers at Flat Creek were mined in 1908 (Brooks, 1909). Little work was done on Flat Creek in 1911 due to low water (Porter, 1912), and little progress was made on Flat Creek in 1912 (Ellsworth and Davenport, 1913). Mining occurred on Flat Creek in 1915 (Brooks, 1916). There has been placer gold production on the lower Fortymile River (see also EA071) near the mouth of Flat Creek.
|Geologic map unit||(-141.330989720785, 64.2945926363983)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Placers at Flat Creek were mined in 1908 (Brooks, 1909). Little work was done on Flat Creek in 1911 due to low water (Porter, 1912), and little progress was made on Flat Creek in 1912 (Ellsworth and Davenport, 1913). Mining occurred on Flat Creek in 1915 (Brooks, 1916). There has been placer gold production on the lower Fortymile River near the mouth of Flat Creek.|
|Indication of production||Yes; small|
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., 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.
Ellsworth, C.E., and Davenport, R.W., 1913, Placer mining in the Yukon-Tanana region: U.S. Geological Survey Bulletin 542-F, p. 203-222.
Foster, H.L., and Keith, T.C., 1968, Preliminary geologic map of the Eagle B-1 and C-1 quadrangles: U.S. Geological Survey Open-File Report 68-103, 1 sheet, scale 1:63,360.
|Reporters||R.L. Flynn; M.B. Werdon|
|Last report date||5/1/2002|