Quadrangle map, 1:250,000-scale | SD |
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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 descriptionAt 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) |
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Age of mineralization | Probably Cretaceous or younger based on the age of the host rocks. |
Indication of production | None |
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References | |
Reporters | Donald Grybeck (U.S. Geological Survey) |
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Last report date | 10/8/2004 |