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Unnamed Occurrence (ARDF - ID060; near VABM Hickey), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA

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Location: This occurrence is about 600 feet east of VABM Hickey at an elevation of about 2,150 feet. The occurrence is near the center of section 25, T. 30 N., R. 45 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is a brecciated, iron- stained sandstone of the Upper Cretaceous, Kuskokwim Group that contains quartz veins (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). Samples of the iron-stained breccia zones with quartz veins contained 70 parts per million (ppm) antimony, 850 parts per billion (ppb) mercury, and 50 ppm arsenic (McGimsey and others, 1988).
Workings: The Alaska Division of Geological and Geophysical Surveys and U.S. Geological Survey sampled the site in 1984 and 1986 (McGimsey and others, 1988).

Commodities (Major) - Hg, Sb; (Minor) - As
Development Status: None
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c).

Mineral List



1 entry listed.

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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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