Unnamed (on Noyes Island) (ARDF #CR015) Cu, Mo

Unnamed (on Noyes Island)

Prospect, Probably inactive

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Alternative names

Brown and Metz

Commodities and mineralogy

Main commodities	Cu; Mo
Ore minerals	chalcopyrite; molybdenite; pyrrhotite

Geographic location

Quadrangle map, 1:250,000-scale	CR
Quadrangle map, 1:63,360-scale	C-6
Latitude	55.55068
Longitude	-133.67006
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	The location of these prospects is known no more closely than at the north end of Noyes Island. The site is arbitrarily plotted in about the center of the SW1/4 section 11, T. 73 S., R. 77 E.

Geologic setting

Geologic description Wright and Wright (1908) note that chalcopyrite and pyrrhotite occur at some unspecified location on the north end of Noyes Island near the contact of a granitic body. An analysis of pyrrhotite from what they call the the Brown and Metz prospect showed 0.1 to 0.2 percent nickel, and a trace of cobalt. Buddington and Chapin (1929) note a molybdenum occurrence at some unspecified location on the north end of Noyes Island. The rocks on the north end of Noyes Island consist of a small Cretaceous pluton that intrudes basaltic to andesitic rocks of the Descon Formation of Silurian and Ordovician age (Brew, 1996).
Geologic map unit	(-133.671758613081, 55.5503172357169)

Geologic description

Wright and Wright (1908) note that chalcopyrite and pyrrhotite occur at some unspecified location on the north end of Noyes Island near the contact of a granitic body. An analysis of pyrrhotite from what they call the the Brown and Metz prospect showed 0.1 to 0.2 percent nickel, and a trace of cobalt. Buddington and Chapin (1929) note a molybdenum occurrence at some unspecified location on the north end of Noyes Island. The rocks on the north end of Noyes Island consist of a small Cretaceous pluton that intrudes basaltic to andesitic rocks of the Descon Formation of Silurian and Ordovician age (Brew, 1996).

Geologic map unit

(-133.671758613081, 55.5503172357169)

Production and reserves

Indication of production	None

References

MRDS Number	A010032
References Brew, D.A., 1996, Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2319, 53 p., 1 sheet, scale 1:250,000. Buddington, A.F., and Chapin, Theodore, 1929, Geology and mineral deposits of southeastern Alaska: U.S. Geological Survey Bulletin 800, 398 p. Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-869, 262 p. Eberlein, G.D., Churkin, Michael, Jr., Carter, Claire, Berg, H.C., and Ovenshine, A. T., 1983, Geology of the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-91, 52 p. Wright, F.E., and Wright, C.W., 1908, The Ketchikan and Wrangell mining districts, Alaska: U.S. Geological Survey Bulletin 347, 210 p.
Reporters	D.J. Grybeck (Applied Geology)
Last report date	5/1/2004