Main commodities | Cu |
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Ore minerals | chalcopyrite; pyrite |
Quadrangle map, 1:250,000-scale | KC |
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Quadrangle map, 1:63,360-scale | A-5 |
Latitude | 55.079 |
Longitude | -131.542 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This occurrence is at the south tip of an islet just off the east shoreline of inner Tamgas Harbor, about 0.85 mile north-northeast of Crab Point. The site is in section 27, T. 78 S., R. 92 E., of the Copper River Meridian. It corresponds to loc. 42 in Berg (1972 [I 684]), loc. 150 in Elliott and others (1978), and loc. 46 in Karl (1992). The location is accurate within a few hundred feet. |
Geologic descriptionThe country rocks at this site are greenschist-grade schist and hornfels, probably derived from volcanic, sedimentary, and intrusive rocks of Silurian and Ordovician age (Berg, 1972; Berg and others, 1988). The occurrence consists of pyrite and chalcopyrite very sparsely disseminated in the schist and hornfels (Berg, 1992, loc. 42). | |
Geologic map unit | (-131.54367725242, 55.0786587700894) |
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Mineral deposit model | Disseminated sulfide deposit of undetermined origin. |
Indication of production | None |
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MRDS Number | A012392 |
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References | |
Reporters | H.C. Berg, USGS |
Last report date | 7/7/1999 |