Crooked Creek

Mine, 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 A-1
Latitude 62.0618
Longitude -147.209
Nearby scientific data Find additional scientific data near this location
Location and accuracy This placer mine is located on Crooked Creek, 1 1/2 miles downstream from the mouth of Willow Creek and about 3 miles southwest of the Nelchina townsite. The location is accurate.

Geologic setting

Geologic description

The rocks in the drainage of Crooked Creek are Jurassic volcanic and sedimentary rocks (Csejtey and others, 1978). Gold occurs in the alluvial gravel. Some of it is in a blue-gray gravel bed 9 feet thick and about 100 feet below the surface (Chapin, 1918). The mine includes minor surface workings and a 180-foot-deep shaft that did not hit bedrock. The blue-gray gravel from 97 to 106 feet in the shaft contains ‘…a few colors of gold to the pan’ (Chapin, 1918).
Geologic map unit (-147.211201364898, 62.0612956545533)
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 The mine includes minor surface workings and a 180-foot-deep shaft that did not hit bedrock. The blue-gray gravel from 97 to 106 feet in the shaft contained ‘…a few colors of gold to the pan’ (Chapin, 1918).
Indication of production Yes; small

Additional comments

MAS/MILS number 20760028.

References

MRDS Number A012175

References

Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/3/2002