Main commodities | Ag; Pb; Zn |
---|---|
Other commodities | Au; Cu |
Ore minerals | galena; malachite pyrite; sphalerite |
Gangue minerals | quartz |
Quadrangle map, 1:250,000-scale | SK |
---|---|
Quadrangle map, 1:63,360-scale | B-3 |
Latitude | 59.39 |
Longitude | -136.07 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This prospect is north of the Little Salmon River at an elevation of approximately 700 feet; it is approximately 1.1 miles, S32W from VABM 1720 ('Knob'). It is approximately 6 miles west of the village of Klukwan in the NE1/4, section 1, T. 29 S., R. 55 E. of the Copper River Meridian. It is shown as locations 214 to 218 by Still and others (1984); site M by Still and others (1987); site K by Gilbert and Redman (1989); and number S016 by Wells and others (1986). |
Geologic descriptionStill and others (1991) describe this as a silver prospect that consists of silver-bearing, galena-sphalerite-quartz veins in dolomite and argillite. They collected rock samples that contained up to 610.3 ppm silver, 15.7% lead, 5.8% zinc, 0.471 ppm gold, and 1,640 ppm copper. Sample descriptions include: 'quartz vein with sphalerite, galena pyrite, and malachite(?)', 'quartz-gossan breccia with galena' and 'quartz-calcite breccia with galena and sphalerite'. The Devonian to Mississippian age of the carbonate host rocks (Gilbert and others, 1987) establishes a maximum age for the mineralization. However, the quartz-sulfide veins are probably of Tertiary age based on the 29.3 + 1 to 33.0 + 1 m.y. age of nearby intrusive bodies (Gilbert and others, 1987). | |
Geologic map unit | (-136.07185475898, 59.3896690283235) |
---|---|
Mineral deposit model | Silver-bearing quartz-sulfide veins in dolomite and argillite (Cox and Singer, 1986; 22c). |
Mineral deposit model number | 22c |
Age of mineralization | The Devonian to Mississippian age of the carbonate rocks that host the deposit (Gilbert and others, 1987) establishes a maximum age for the mineralization. However, the quartz-sulfide veins are probably of Tertiary age, based on the 29.3 + 1 to 33.0 + 1 m.y. age of nearby intrusive bodies (Gilbert and others, 1987). |
Workings or exploration | According to Still and others (1991), this prospect is in an area penetrated by overgrown logging roads, with few outcrops. It was discovered by Merrill Palmer in 1980. |
---|---|
Indication of production | None |
MRDS Number | A013101 |
---|---|
References | |
Reporters | T.C. Crafford (T. Crafford & Associates, Anchorage) |
Last report date | 2/4/2001 |