Roosevelt Creek

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale FB
Quadrangle map, 1:63,360-scale A-3
Latitude 64.06
Longitude -148.163
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Roosevelt mine is located somewhere in the center of T. 10 S., R. 3 W., Fairbanks Meridian. The exact location of the site that was mined is uncertain, and the coordinates are at about the mid-point of the creek. The actual location of mining may vary by a mile or more from the coordinates. This mine is locality 76 of Cobb (1972 [MF 410]).

Geologic setting

Geologic description

The upper part of the valley of Roosevelt Creek is eroded in thick Nenana Gravel, but the lower part of the valley is eroded to a depth of 100 feet or more into interbedded clay, sand, gravel, and coal of the Tertiary Grubstake Formation (Wahrhaftig, 1970 [GQ-809]). Gold is found in the basal 2 feet of stream gravel (Maddren, 1918, p. 400). Placer gold in the creek is fine, flat, and well-worn (Prindle, 1907, p. 210-211). Mining was reported in 1910 and 1916 (Capps, 1912, p. 44; Maddren, 1918, p. 399).
Geologic map unit (-148.165341471242, 64.0595572530013)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary placer.

Production and reserves

Workings or exploration Small-scale placer mining was reported in 1910 and 1916 (Capps, 1912, p. 44; Maddren, 1918, p. 399-400).
Indication of production Yes; small
Production notes Small scale placer mining was reported in 1910 and 1916, but there is no information available of the amount of production (Capps, 1912, p. 44; Maddren, 1918, p. 399-400).

References