Quadrangle map, 1:250,000-scale | CH |
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Quadrangle map, 1:63,360-scale | D-6 |
Latitude | 67.76 |
Longitude | -149.71 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | The Snowden Creek occurrence is approximately 3 miles south-southwest of Snowden Mountain. It is near the 3,000-foot level of a ridge immediately north of lower Snowden Creek and overlooking the Dietrich River (sec. 24, T. 34 N., R. 10 W., of the Fairbanks Meridian). The location is accurate within a 1/2-mile radius. |
Geologic descriptionThis occurrence consists of: (a) a 6-inch-thick gypsum-calcite zone in shaly limestone which contains abundant fine-grained pyrite; and (b) vein quartz float that contains traces of graphite, pyrite, and chalcopyrite (Mulligan, 1974). Dillon and others (1988) mapped the country rocks as a Devonian igneous unit of diabase, gabbro, and diorite dikes and sills that is in contact with Middle Ordovician black, carbonaceous phyllite and meta-limestone. Calc-silicate hornfels occurs along the contact. Cr, Pb, Ni, and V were detected spectrographically in samples from the occurrence (Mulligan, 1974). | |
Geologic map unit | (-149.712771215502, 67.7595936836938) |
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Indication of production | None |
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MRDS Number | A012150 |
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References | |
Reporters | J.M. Britton (Anchorage) |
Last report date | 11/17/1999 |