Mine detail: Yakobi Island

Previously called 'Miner Island'

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Location

Lat / long: 58.01165, -136.34511

Resource(M)

Primary: Gold
Ore: Chalcopyrite, Gold
Gangue: Quartz

Production

Operation type: Unknown
Development status: Past Producer

Geology

Host type:Mafic Intrusive Rock
Associated type:Mafic Intrusive Rock,Hornblendite
Alteration processes:Clay gouge developed along shear zone.

References

MRDSA013195
DEP10002291
Reference{Deposit:: Overbeck, R.M., 1919, Geology and mineral resources of the west coast of Chichagof Island: U.S. Geological Survey Bulletin 692, p. 91-136.}{Deposit:: Rossman, Darwin, 1959, Geology and ore deposits of the northwestern part of Chichagof Island, Alaska: U.S. Geological Survey Bulletin 1058-E, p. 139-216.}{Deposit:: Cobb, E.H., 1972, Metallic mineral resources of the Mount Fairweather quadrangle, AK: U.S. Geological Survey Miscellaneous Field Study Map MF-436, 1 sheet, scale 1:250,000.}{Deposit:: Loney, R.A., Brew, D.A., Muffler, L.J. B., and Pomeroy, J.S., 1975, Reconnaissance geology of Chichagof, Baranof, and Kruzof Islands, southeastern Alaska: U.S. Geological Survey Professional Paper 792, 105 p.}{Deposit:: Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Mt. Fairweather and Skagway quadrangles, Alaska: U.S. Geological Survey Open-File Report 78-316, 123 p.}
ReporterC.C. Hawley