Unnamed (tributary to East Fork Chulitna River)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale HE
Quadrangle map, 1:63,360-scale A-4
Latitude 63.17
Longitude -148.96
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence of placer gold is on an unnamed southeast-flowing tributary of the East Fork Chulitna River. The placer extends upstream from the map site, which is in the SE1/4 of sec. 19, T. 20 S., R. 7 W., of the Fairbanks Meridian. This is location D-3 of Balen (1990: OFR 34-90).

Geologic setting

Geologic description

This tributary drains an area underlain by Lower Cretaceous or Upper Jurassic turbidites and Lower Tertiary volcanic rocks (Wilson and others, 1998). Of 13 placer samples collected the highest values were 360 ppb gold and 110 ppm tin (Balen, 1990: OFR 34-90). The source of the placer gold and tin is unknown.
Geologic map unit (-148.962268858205, 63.1695332953599)
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 Surface workings only to date.
Indication of production None

References