Unnamed Occurrence (ARDF - ID065; upper Dishna River), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA
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Location: This occurrence lies on an isolated, north-south trending ridge in the upper Disha River basin. The locality lies 0.2 mile south-southwest of Hill 1340, southwest of the center of section 2, T. 29 N., R. 44 W., of the Seward Meridian. The location is accurate.
Geology: Altered sandstone and shale of the Upper Cretaceous Kuskokwim Group. A grab sample yielded 2.9 ppm Hg, but no ore minerals were observed. A small northeast-trending felsic dike lies 0.7 mile north of the sample site.
Commodities (Major) - Hg
Development Status: Undetermined.
Deposit Model: Hot spring gold-silver (?) (Cox and Singer, 1986; model 25a).
1 entry listed. 1 valid mineral.
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Bundtzen, T.K., Laird, G.M., and Lockwood, M.S., 1988, Geologic map of the Iditarod C-3 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 96, 13 p., 1 sheet, scale 1:63,360. McGimsey, R.G., Miller, M.L., and Arbogast, B.F., 1988, Paper version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska: U.S. Geological Survey Open-File Report 88-421-A, 110 p., 1 sheet, scale 1:250,000. Miller, M.L., Bundtzen, T.K., and Gray, J.E., 2005, Mineral resource assessment of the Iditarod quadrangle, west-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-B, scale 1:250,000, pamphlet.