Mine detail: Bear Mountain

Previously called ''

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Location

Lat / long: 68.36988, -142.15318

Resource(M)

Primary: Molybdenum, Tungsten, Lead
Ore: Galena, Molybdenite, Wolframite
Gangue: Goethite, Hematite, Jarosite, Kaolinite, Limonite, Magnetite, Muscovite, Quartz, Rutile, Topaz

Production

Operation type: Unknown
Development status: Occurrence

Geology

Host type:Rhyolite
Associated type:Metasedimentary Rock
Alteration processes:Core of sericitic and argillic alteration with outer zone of silicification; local peripheral areas of pyritic and propylitic alteration.

References

MRDSA012545
DEP10001758
Reference{Deposit:: Barker, J.C., and Swainbank, R.C., 1986, A tungsten-rich porphyry molybdenum occurrence at Bear Mountain, northeast Alaska: Economic Geology vol. 81, p. 1753-9}{Deposit:: Barker, J.C., 1978, Mineral Investigations of certain lands in the eastern Brooks Range: a summary report: US Bureau of Mines Open-File No. 63-78}{Deposit:: Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.}{Deposit:: Brosge, W.P., and Reiser, H.N., 1976, Preliminary geologic and mineral resource maps (excluding petroleum), Arctic National Wildlife Range, Alaska: U.S. Geological Survey Open-File Report 76-539, 4 sheets, scale 1:500,000.}{Deposit:: Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.}{Deposit:: Brosgi, W.R., and Reiser, H.N., 1968, Geochemical maps of granitic rocks, Coleen and Table Mountain quadrangles, Alaska: U.S. Geological Survey Open-File Report 323, scale 1:250,000.}
ReporterK.R. Leonard, J.M. Schmidt, D.F. Huber, J.H. Dover