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Unnamed Occurrence (ARDF - ID058; west of North Fork Otter Creek), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA

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Locality equivalent to #72 of Miller, Bundtzen, and Gray (2005), Table 1.
Location: This occurrence is on a prominent, northeast-trending ridge that separates the North Fork of Otter Creek from the headwaters of Moose Creek. The occurrences is about 2.5 miles north-northeast of triangulation station 'Caribou' and about 1,000 feet east of the center of section 32, T. 29 N., R. 45 W., of the Seward Meridian. The location is accurate.
Geology: A composite grab sample of apparently unmineralized, moderately sorted sandstone of the Upper Cretaceous, Kuskokwim Group contained 76 parts per million antimony (McGimsey and others, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The source of the elevated antimony is an enigma.
Workings: Surface samples were collected by the U.S. Geological Survey in 1986 (McGimsey and others, 1988).
Alteration: None.

Commodities (Major) - Sb
Development Status: None

Mineral List



1 entry listed. 1 valid mineral.

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References

Bundtzen, T.K., and Miller, M.L., 1997, Precious metals associated with Late Cretaceous-early Tertiary igneous rocks of southwestern Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 242-286. 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., and Bundtzen, T.K., 1994, Generalized geologic map of the Iditarod quadrangle, Alaska showing potassium-argon, major oxide, trace element, fossil, paleocurrent, and archeological sample localities: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-A, 48 pages; 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.

Mineral and/or Locality  
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