Unnamed (southwest of Sillyasheen Mountain) (ARDF #WI004) Cu

Unnamed (southwest of Sillyasheen Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Cu
Ore minerals	malachite; unspecified copper sulfides

Geographic location

Quadrangle map, 1:250,000-scale	WI
Quadrangle map, 1:63,360-scale	C-6
Latitude	67.6718
Longitude	-152.946
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is at an elevation of about 1,520 meters, 0.5 mile west-northwest of the center of section 23, T. 33. N., R. 24 W., of the Fairbanks Meridian. The location is accurate within 1 mile.

Geologic setting

Geologic description This occurrence consists of unspecified copper sulfides and malachite staining in Devonian phyllite (Brosge and Reiser, 1960). The rocks in the area are a unit of Middle to Upper Devonian(?) calcareous, chloritic wacke, which also includes sandstone, conglomerate, limestone, and phyllite (Dillon and others, 1986). No other information is available.
Geologic map unit	(-152.948789405594, 67.6713377043172)
Alteration of deposit	Oxidation of copper minerals.

Production and reserves

Workings or exploration	Only surface sampling.
Indication of production	None

References

References Cobb, E.H., 1972, Metallic mineral resources map of the Wiseman quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-469, 1 sheet, scale 1:250,000 Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p. Cobb, E.H., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Wiseman quadrangle, Alaska; Supplement to Open-File Report 76-340; Part B, Lists of references to January 1, 1981: U.S. Geological Survey Open-File Report 81-732-B, 22 p.
Reporters	J.M. Britton (Anchorage)
Last report date	8/9/2002