Ben Creek

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities REE; Th
Ore minerals allanite; gold; monazite

Geographic location

Quadrangle map, 1:250,000-scale EA
Quadrangle map, 1:63,360-scale C-4
Latitude 64.6799
Longitude -142.7217
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 setting

Geologic description

The 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.

Production and reserves

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

References

MRDS Number A015141

References

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