Unnamed (south of Chandalar)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CH
Quadrangle map, 1:63,360-scale B-3
Latitude 67.42
Longitude -148.46
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is located approximately 5 1/4 miles south-southeast of Chandalar in a saddle between peaks 4970 and 4607 (SW1/4 sec. 16, T. 30 N., R. 4 W., of the Fairbanks Meridian). This site corresponds to unnamed loc. 81 in DeYoung (1978). The location is accurate within a 1/2-mile radius.

Geologic setting

Geologic description

Brosgé and Reiser (1972, p. 16) noted that gold occurs in quartz veins at this location. The gold occurrence is a sample of a quartz vein containing anomalous gold values in the range of 0.04 to 0.079 ppm Au. The vein sample was taken from an area mapped as Devonian quartz-muscovite schist (Brosgé and Reiser, 1964). No other information is available.
Geologic map unit (-148.462719057297, 67.419607271515)
Mineral deposit model Low-sulfide Au-quartz veins? (Cox and Singer, 1986; model 36a?).
Mineral deposit model number 36a?
Age of mineralization Middle Cretaceous(?) based on arguments by Dillon (1982) that the age of emplacement of the gold-bearing quartz veins of the Koyukuk and Chandalar districts was between the Neocomian metamorphism of the Devonian host rocks and their erosional unroofing and cooling in Albian time.

Production and reserves

Indication of production None

Additional comments

See also: Big Joe Creek [occurrence] (CH015).

References