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Rabbit Mountain

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag; Cu; Pb; Zn
Other commodities Th; U
Ore minerals chalcopyrite; galena; malachite
Gangue minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale CO
Quadrangle map, 1:63,360-scale B-3
Latitude 67.48
Longitude -142.3
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located a few hundred ft. (about 100 m) west of VABM 3081 on Rabbit Mtn. midway between locality 1 of Barker (1981, p. 25) and locality 2 of Barker and Clautice (1978, p. 14); located to within 2 mi (3.2 km).

Geologic setting

Geologic description

Rhyolite dikes <100 feet (30.5 m) thick intrude argillite in a sequence of phyllite siltstone and quartzite. Small gossans occur in argillite; pyrite locally occurs in quartzite (Barker, 1981, p. 81).
Geologic map unit (-142.302700646399, 67.4797256801268)
Mineral deposit model Polymetallic lodes (veins?) associated with rhyolite dikes
Alteration of deposit Minor argillic alteration and silicification

Production and reserves

Workings or exploration Sedimentary rocks contain up to 26 ppm Ag, 2200 ppm Zn, 2% Cu and 1.5% Pb (Brosge and Reiser 1968). Small gossan yields 1100 ppm Cu, 11.2% Pb, 6700 ppm Zn, 115 ppm Ag, 1.8 ppm U and 7.5 ppm Th. Pyritic quartzite contains 68 ppm Cu, 610 ppm Pb, 390 ppm Zn. Soils contain <83 ppm Cu, 420 ppm Pb, 270 ppm Zn (Barker, 1981, p. 81-8).
Indication of production None

Additional comments

See MAS/MILS Sequence number 0020330008 (USBM, 1995).

References

MRDS Number A106076

References

Barker, J.C., 1981, Mineral investigations in the Porcupine River drainage, Alaska: U.S. Bureau of Mines Open-File Report 27-81, 189 p., 2 sheets.
Barker, J.C., and Clautice, K.H., 1978, Mineral reconnaissance of the Porcupine River region--A summary report: U.S. Bureau of Mines Open-File Report 87-78, 20 p.
Grybeck, Donald, 1977, Map showing known mineral deposits of the Brooks Range, Alaska: U.S. Geological Survey Open-File Report 77-166-C, 45 p., 1 sheet, scale 1:1,000,000.
Reporters J.M. Schmidt
Last report date 10/15/1992