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Unnamed Occurrence (ARDF - ID059; head of North Fork Otter Creek), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA

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Locality equivalent to #73 of Miller, Bundtzen, and Gray (2005), Table 1.
Location: This occurrence is on a steep, northeast-trending ridge that separates the headwaters of Otter Creek from the South Fork of Moose Creek. The occurrence is at an elevation of about 1,500 feet, about 1.1 mile northeast of hill 1853, and about 1.6 miles south-southwest of 1976, in the southwest part of section 22, T. 29 N., R. 45 W., of the Seward Meridian. The location is accurate.
Geology: A composite sample of apparently unmineralized sandstone of the Upper Cretaceous, Kuskokwim Group contained 92 parts per million (ppm) antimony and 20 ppm arsenic (McGimsey and others, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005).
Workings: Samples were collected by the U.S. Geological Survey in 1986 (McGimsey and others, 1988).

Commodities (Major) - Sb; (Minor) - As
Development Status: None

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References

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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