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  3. Alaska Resource Data File (ARDF)

Unnamed (northwest of upper Deadwood Creek)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Au
Other commodities As; Hg
Ore minerals iron oxide
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale ID
Quadrangle map, 1:63,360-scale C-3
Latitude 62.70909
Longitude -157.27633
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is near hill 1776 on a southeast-trending ridge about 0.7 mile northwest of the sharp bend at the head of Deadwood Creek . It is at an elevation of about 1,750 feet, about 0.4 mile northeast of the center of section 11, T. 30 N., R. 42 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of a series of thin quartz veins in an iron-oxide-stained, sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The quartz veins are near a N50E-striking mafic dike that cuts the Kuskokwim Group. One grab sample of the quartz veins contained 200 parts per billion (ppb) gold, 1,500 ppb mercury, and 99 parts per million (ppm) arsenic (Bundtzen, Laird, and Lockwood, 1988).
Geologic map unit (-157.278690239056, 62.708415756592)
Mineral deposit model Polymetallic vein (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Alteration of deposit Silicification.

Production and reserves

Workings or exploration The Alaska Division of Geological and Geophysical surveys sampled this occurrence in 1983 (Bundtzen, Laird, and Lockwood, 1988).
Indication of production None

References

References

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.
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.
Reporters T.K. Bundtzen (Pacific Rim Geological Consulting, Inc.), M.L. Miller (U.S. Geological Survey); and C.C. Hawley (Hawley Resource Group)
Last report date 5/18/2003