Unnamed (near Point Coke)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SD
Quadrangle map, 1:63,360-scale D-6
Latitude 57.79341
Longitude -133.69512
Nearby scientific data Find additional scientific data near this location
Location and accuracy Several claims were staked near Point Coke where Kimble and others (1984) collected a sample that contained anomalous copper. The site is about 0.5 mile east-southeast of the center of section 14, T. 47 S., R. 72 E.

Geologic setting

Geologic description

At least 5 claims were staked near Point Coke from about 1900 to 1920. Their exact location is unknown but Kimble and others (1984) sampled a 240-foot thick section of schist with quartz veins and minor sulfides at this occurrence. Of the 24 samples, only one, a 2.5-foot-long channel sample across a quartz-feldspar vein has any metal content of significance: 300 ppm copper. The rocks in the area are part of the Cretaceous biotite-schist unit of Brew and Grybeck (1984).
Geologic map unit (-133.696849533288, 57.7930742520003)
Age of mineralization Probably Cretaceous or younger based on the age of the host rocks.

Production and reserves

Indication of production None