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Unnamed Occurrence (ARDF - ID147; on south-flowing tributary of Moose Creek), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA

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Location: This occurrence is at an elevation of about 1,150 feet in a unnamed creek that flows south from Granite Mountain. The occurrence is about 0.8 mile east-southeast of hill 2210 and about 0.3 mile northeast of the center of section 5, T. 25 N., R. 40 W., of the Seward Meridian. The location is accurate.
Geology: Visible gold was found in a nonmagnetic, heavy mineral concentrate collected in an unnamed creek flowing south from Granite Mountain. The rocks in the vicinity are hornfels derived from the Upper Cretaceous, Kuskokwim Group, and granitic rocks from the Cretaceous Granite Mountain pluton (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005).
Workings: Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in the 1980s (Bennett and others, 1988).
Age: Probably Quaternary.

Commodities (Major) - Au
Development Status: None
Deposit Model: Placer Au deposit (Cox and Singer, 1986; model 39a).

Mineral List



1 entry listed. 1 valid mineral.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Bennett, G.J., Gray, J.E., and Taylor, C.D., 1988, Mineralogy and sample locality map of the nonmagnetic, heavy-mineral-concentrate samples, Iditarod quadrangle, Alaska: U.S. Geological Survey Open-File Report 88-32, 37 p., 1 plate, 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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