Unnamed (south of Mallard Bay) (ARDF #DE041) Fe

Unnamed (south of Mallard Bay)

Occurrences, Inactive

Commodities and mineralogy

Main commodities	Fe
Ore minerals	magnetite

Geographic location

Quadrangle map, 1:250,000-scale	DE
Quadrangle map, 1:63,360-scale	D-1
Latitude	54.778
Longitude	-132.0238
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This site represents one or more claims on the ridge about 0.6 mile south of the head of Mallard Bay. All or most of the claim(s) are probably in the N1/2 section 7, T. 82 S. R. 90 E. The location is a general one and the site may be a mile or more from the coordinates.

Geologic setting

Geologic description In 1958, Utah Construction Company staked one or more claims on a magnetic anomaly identified from an aeromagnetic survey. Magnetite occurs in a band of Silurian or Ordovician pyroxenite (MacKevett, 1963; Gehrels, 1992).
Geologic map unit	(-132.025470020386, 54.7776578967599)
Mineral deposit model	Magnetite in pyroxenite.
Age of mineralization	Magnetite in Silurian or Ordovician pyroxenite.

Production and reserves

Workings or exploration	None; claims were staked on an anomaly determined from an aeromagnetic survey.
Indication of production	None

References

MRDS Number	A010261
References Gehrels, G. E., 1992, Geologic map of southern Prince of Wales Island, southeastern Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-2169, 23 p., 1 sheet, scale 1:63,360. MacKevett, E.M., Jr., 1963, Geology and ore deposits of the Bokan Mountain uranium-thorium area, southeastern Alaska: U.S. Geological Survey Bulletin 1154, 125 p.
Reporters	D.J. Grybeck (Applied Geology)
Last report date	9/1/2003