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Unnamed (southeast of VABM Canwell)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag; Cu
Ore minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale B-4
Latitude 63.3233
Longitude -145.6627
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of 4,750 feet about 4,500 feet southeast of VABM Canwell on the west side of Rainbow Ridge. It is in the NW1/4SW1/4 section 28, T. 18 S., R. 11 E., Fairbanks Meridian. The occurrence is described in Hanson (1963, p. 67) and corresponds to locality S107 in table 2 of Nokelberg and others (1991).

Geologic setting

Geologic description

At this occurrence, pyrite forms disseminations and coats fractures in Permian (?) metadacite intrusive rocks and in fragmental volcanic rocks of the Slana Spur Formation of Pennsylvanian age (Hanson, 1963). This occurrence is one of the four prominent areas of pyrite and chalcopyrite disseminated in dacitic tuff noted by Hanson (1963, p. 67, figure 5).
Geologic map unit (-145.66495200506, 63.3228880499264)
Mineral deposit model Polymetallic veins; Porphyry Cu (Cox and Singer, 1986; model 22c, model 17).
Mineral deposit model number 22c, 17
Age of mineralization Permian (?) or younger.

Production and reserves

Workings or exploration The occurrence is on active claims of Northeast Exploration.
Indication of production None

References

References

Hanson, L.G., 1963, Bedrock geology of the Rainbow Mountain area, Alaska Range, Alaska: Alaska Division of Mines and Minerals Geologic Report 2, 82 p., 2 plates.
Nokleberg, W.J., Lange, I.M., Roback, R.C., Yeend, Warren, and Silva, S.R., 1991, Map showing locations of metalliferous lode and placer mineral occurrences, mineral deposits, prospects, and mines, Mount Hayes quadrangle, eastern Alaska Range, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1996-C, 42 p., 1 sheet, scale 1:250,000.
Reporters W.T. Ellis (Alaska Earth Science), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (USGS)
Last report date 6/21/2002