Twin Creek

Mine, 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 64.2684
Longitude -141.2633
Nearby scientific data Find additional scientific data near this location
Location and accuracy Twin Creek is a small tributary of the lower Fortymile River; its mouth is about 8 miles west of the Canadian border. The location of placer gold mining on Twin Creek is uncertain. The mine coordinates are near the mouth of the creek, in section 31, T. 7 S., R. 33 E., of the Fairbanks Meridian. The location is accurate within 1 mile. Twin Creek is locality 62 of Cobb (1972 [MF-393]) and locality 60 of Eberlein and others (1977).

Geologic setting

Geologic description

The rocks along Twin Creek are Paleozoic amphibolite-facies gneiss and amphibolite (Foster, 1976). Extensive terrace gravel deposits are present on both sides of the lower portion of the Fortymile River, including in the vicinity of the mouth of Twin Creek. The terraces are as much as several hundred feet above the river (Foster and Keith, 1968). Placer gold has been produced on the lower Fortymile River (see EA071) near the mouth of Twin Creek. Mining on Twin Creek itself may be restricted to the area below the benches along the Fortymile River.
Prindle (1908) included Twin Creek in gold production totals with Napoleon Creek (EA123), Montana Creek (EA067), Buckskin Creek (EA113), Dome Creek (EA055 or EA079), and Eagle Creek (location unknown), which together produced 121.68 fine ounces of gold from 1904 to 1907. Ellsworth and Davenport (1913) reported that very little progress was made on Twin Creek in 1912. Powers (1935) reported a good showing was made on benches on the Fortymile River near Twin Creek.
Geologic map unit (-141.265584325822, 64.2680951569546)
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 Ellsworth and Davenport (1913) reported that very little progress was made on Twin Creek in 1912. Powers (1935) reported a good showing was made on benches on the Fortymile River (see EA071) near Twin Creek.
Indication of production Yes; small
Production notes Prindle (1908) included Twin Creek in gold production totals with Napoleon Creek (EA123), Montana Creek (EA067), Buckskin Creek (EA113), Dome Creek (EA079 or EA055), and Eagle Creek (location unknown), which together produced 121.68 fine ounces of gold from 1904 to 1907.

References

MRDS Number A015166

References

Reporters R.L. Flynn; M.B. Werdon
Last report date 5/1/2002