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Seymour Sulfide

Prospect, Inactive

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Commodities and mineralogy

Main commodities Cu

Geographic location

Quadrangle map, 1:250,000-scale SI
Quadrangle map, 1:63,360-scale D-1
Latitude 57.8752
Longitude -134.2939
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Seymour Sulfide prospect is at sea level on the northwest shore of Windfall Harbor, 1.4 miles west-southwest of Late Point on Windfall Island. The prospect is 0.5 mile south-southeast of the center of sec. 18, T. 46 S., R. 69 E. It is MAS no. 0021140181 (U.S. Bureau of Land Management, 2002). The location is accurate within 0.2 mile.

Geologic setting

Geologic description

The rocks in the vicinity of the Seymour Sulfide prospect are part of the Permian Cannery Formation which consists of graywacke, slate, phyllite, and conglomerate (Lathram and others, 1965). Little is known about this prospect other than that one or more claims were staked here for copper (U.S. Bureau of Land Management, 2002).
Geologic map unit (-134.295653022318, 57.8748634979612)
Age of mineralization Permian or younger based on the age of the host rock.

Production and reserves

Workings or exploration Little is known about this prospect other than that one or more claims was staked here for copper.
Indication of production None

Additional comments

The prospect is now within the Wilderness of the Admiralty Island National Monument and is closed to mineral exploration and development.

References

References

Lathram, E.H., Pomeroy, J.S., Berg, H.C., and Loney, R.A., 1965, Reconnaissance geology of Admiralty Island, Alaska: U.S. Geological Survey Bulletin 1181-R, p. R1-R48.
U.S. Bureau of Land Management, 2002, Alaska mineral locations database report (Sitka quadrangle), July 2, 2002, 205 p. [http://imcg.wr.usgs.gov/dem.html]
Reporters Donald Grybeck (U.S. Geological Survey)
Last report date 5/5/2005