Unnamed (north of Reindeer River) (ARDF #ID097) As

Unnamed (north of Reindeer River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	As
Other commodities	Ag; Au; Hg; Sb
Ore minerals	hematite

Geographic location

Quadrangle map, 1:250,000-scale	ID
Quadrangle map, 1:63,360-scale	B-6
Latitude	62.38525
Longitude	-158.96036
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is near the top of hill 680, about 5 miles north of the Reindeer River. The occurrence is near the center of section 32, T. 27 N., R. 52 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description This occurrence is a zone of intense iron-oxide alteration in sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). As exposed in rubble, veins of secondary hematite of uncertain extent and orientation crosscut the sandstone beds. Grab samples of the hematite-rich veins contain up to 150 parts per million arsenic, and trace amounts of antimony, mercury, silver, and gold (McGimsey and others, 1988).
Geologic map unit	(-158.962751784793, 62.3845496483705)
Mineral deposit model	Hematite veins in sandstone.
Alteration of deposit	Secondary hematite and intense iron oxide staining.

Production and reserves

Workings or exploration	Samples were collected by the U.S. Geological Survey in 1985 (McGimsey and others, 1988).
Indication of production	None

References

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.
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	5/20/2003