Nugget Gulch

Mine, Probably inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale EA
Quadrangle map, 1:63,360-scale B-1
Latitude 64.263
Longitude -141.2073
Nearby scientific data Find additional scientific data near this location
Location and accuracy Nugget Gulch is a small tributary of the Fortymile River located about 6 miles west of the Canadian border and about 2.5 miles east of Steele Creek. Most of the gold found in Nugget Gulch was in the portion of the creek valley that cuts the benches along the Fortymile River, in about the center of section 33, T. 7 S., R. 33 E., of the Fairbanks Meridian. The location is accurate. Nugget Gulch is locality 45 of Burleigh and Lear (1994), locality 47 of Eberlein and others (1977), and locality 63 of Cobb (1972 [MF-393]).

Geologic setting

Geologic description

The rocks in the vicinity of Nugget Gulch are Paleozoic biotite gneiss and amphibolite (Foster, 1976). In the headwaters of Nugget Gulch, Paleozoic or Mesozoic metagabbro is present. Extensive terrace gravel deposits as high as several hundred feet above the Fortymile River occur on both sides of the lower portion of the river, including near the mouth of Nugget Gulch (Foster and Keith, 1968). Most of the gold found in Nugget Gulch was in the portion that cuts the terraces and was perhaps reconcentrated from them (Prindle, 1909). Nugget Gulch was considered a rich stream for its length (Powers, 1935). There has been placer gold production on the lower Fortymile River (EA071) near the mouth of Nugget Gulch.
Gold was produced from Nugget Gulch in commercial quantities in the 1890s (Brooks, 1900). Several hundred ounces of gold were produced from Nugget Gulch in the late 1800s and early 1900s (Eberlein and others, 1977).
Geologic map unit (-141.209580151726, 64.2626963901493)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Gold was produced from Nugget Gulch in commercial quantities in the 1890s (Brooks, 1900).
Indication of production Yes; small
Production notes Several hundred ounces of gold were produced from Nugget Gulch in the late 1800's and early 1900s (Eberlein and others, 1977).

References

MRDS Number A015167

References

Brooks, A.H., 1900, A reconnaissance from Pyramid Harbor to Eagle City, Alaska, including a description of the copper deposits of the upper White and Tanana Rivers: U.S. Geological Survey Twenty-first Annual Report, p. 331-391, plate 2.
Reporters M.B. Werdon; R.L. Flynn
Last report date 5/1/2002