Main commodities | Cu |
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Ore minerals | azurite; chalcopyrite; malachite; pyrite; pyrrhotite |
Quadrangle map, 1:250,000-scale | CH |
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Quadrangle map, 1:63,360-scale | D-4 |
Latitude | 67.91 |
Longitude | -148.69 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This site is at an elevation of about 4,300 feet, approximately 5 3/4 miles north-northwest of the west end of Reds Lake (SW1/4 sec. 28, T. 36 N., R. 5 W., of the Fairbanks Meridian). This site corresponds to unnamed loc. 78 in DeYoung (1978) and is included with loc. 50 in Schmidt (1997). The location is accurate within a 1/2-mile radius. |
Geologic descriptionThis occurrence is described only as copper sulfides and/or malachite-azurite stains in Devonian limestone and siltstone overlying the Skajit Limestone (Brosgé and Reiser, 1964). A small body of greenstone is nearby. Schmidt (1997, loc. 50) includes this prospect in a group of three, presumably similar deposits. They consist of quartz veinlets containing malachite-azurite plus or minus pyrite, chalcopyrite, and pyrrhotite in the Silurian and Devonian Skajit(?) Limestone and overlying siltstone and limestone (Beaucoup Formation?). No other information is available. | |
Geologic map unit | (-148.692770209225, 67.9096151401512) |
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Mineral deposit model | Polymetallic veins? (Cox and Singer, 1986; model 22c?). |
Mineral deposit model number | 22c? |
Indication of production | None |
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MRDS Number | A012156 |
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ReferencesSchmidt, J.M., 1997, Shale-hosted Zn-Pb-Ag and barite deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral deposits of Alaska, 1997: Economic Geology Monograph 9, p. 35-65.
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Reporters | J.M. Britton (Anchorage) |
Last report date | 11/17/1999 |