Oshetna River

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-2
Latitude 62.365
Longitude -147.4953
Nearby scientific data Find additional scientific data near this location
Location and accuracy This placer prospect and the mining claims on it are on the Oshetna River, upstream from the mouth of the Little Oshetna R River . It is on the east side of sec. 1, T. 26N., R. 10 E., Seward Meridian. The location is accurate to within 1/2 mile.

Geologic setting

Geologic description

The upper part of the Oshetna River drains an area of Tertiary volcanic rocks and remnants of Quaternary landslides and glacial deposits (Kurtak and others, 1992). Near Roaring Creek, the rocks includes Tertiary fluviatile conglomerate; below Roaring Creek, the rocks includes volcanic rocks, sandstone, and argillite of the Jurassic, Talkeetna Formation. The river contains extensive gravel deposits 100 to 1000 feet wide and 10 to 40 feet thick (Kurtak and others, 1992). The gradient of the river is 20 to 130 feet per mile. Gold occurs in the alluvial gravel deposits. Stream-sediment samples collected by the U.S. Bureau of Mines contain 2.2 parts per million gold (Balen, 1990).
Geologic map unit (-147.49750531735, 62.3645241967746)
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 Placer claims were staked in 1973. The Bureau of Mines sampled the gravel in the river (Balen, 1990).
Indication of production None

Additional comments

MAS/MILS number 20760055.

References