Eightmile Creek

Mine, Undetermined

Commodities and mineralogy

Main commodities Au
Other commodities Hg
Ore minerals cinnabar; gold

Geographic location

Quadrangle map, 1:250,000-scale CH
Quadrangle map, 1:63,360-scale C-5
Latitude 67.5655
Longitude -149.3742
Nearby scientific data Find additional scientific data near this location
Location and accuracy The lower half of Eightmile Creek has been mined and the site is plotted at about the middle of this area. Eightmile Creek is a tributary to the Bettles River; the creek is about 5 miles north of the center of Bob Johnson Lake (formerly known as Big Lake). The mined area flows northwest through the southeast quarter of section 29, T. 32 N., R. 8 W.

Geologic setting

Geologic description

Eightmile Creek has been mined for at least a mile above its mouth (Kurtak and others, 2002). Prospecting began in 1900 but there was no substantial mining until 1938, and the creek produced 44 ounces of gold from 1939 to 1941. The creek was again mined from 1948 to 1953; it produced 24 ounces of gold in 1948. Two claims were staked in 1967 (Heiner and Wolff, 1968), and Dillon (1987) reported active claims in 1985. Placer cinnabar was reported (Joesting, 1943). Kurtak and others (2002) suggested that little gold remained in view of the extensive mining in the past.
Geologic map unit (-149.376950720987, 67.5650944853527)
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 Eightmile Creek has been mined for at least a mile above its mouth (Kurtak and others, 2002). Prospecting began in 1900 but there was no substantial mining until the creek was mined from 1938 to 1941. The creek was again mined from 1948 to 1953. Two claims were staked in 1967 (Heiner and Wolff, 1968) and Dillon (1987) reported active claims in 1985.
Indication of production Undetermined
Reserve estimates Kurtak and others (2002) suggested that little gold remained in view of the extensive mining in the past.
Production notes Eightmile Creek has been mined for at least a mile above its mouth (Kurtak and others, 2002). Prospecting began in 1900 but there was no substantial mining until 1938, and the creek produced 44 ounces of gold from 1939 to 1941. The creek was again mined from 1948 to 1953; it produced 24 ounces of gold in 1948.

Additional comments

This prospect is on Doyon Ltd. selected lands; for more information, contact Doyon Ltd., Fairbanks, Alaska.
MAS No. 0020310028

References

MRDS Number A012137

References

Heiner, L.E., and Wolff, E.N., eds., 1968, Mineral resources of northern Alaska, Final report, submitted to the NORTH Commission: University of Alaska, Mineral Industry Research Laboratory Report No. 16, 306 p.
Kurtak, J.M., Klieforth, R.F., Clark, J.M., and Maclean, E.A., 2002, Mineral investigations in the Koyukuk mining district, northern Alaska, 2 vols.: Bureau of Land Management, Alaska Technical Report 50, 845 p.
Reporters J.M. Britton (Anchorage, Alaska); D.J. Grybeck (Contractor, U.S. Geological Survey)
Last report date 4/18/2010