Mine detail: Dall

Previously called 'Dall Bay'

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Location

Lat / long: 55.16363, -131.73482

Resource(M)

Primary: Copper, Gold, Silver
Ore: Barite, Chalcopyrite, Pyrite
Gangue: Quartz

Production

Operation type: Unknown
Development status: Prospect

Geology

Host type:Pegmatite
Alteration processes:Local silicification, pyritization, and carbonatization, and widespread permeation of country rocks by finely disseminated hydrothermal hematite.

References

MRDSA012371
DEP10001607
Reference{Deposit:: Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p.}{Deposit:: Berg, H.C., 1973, Geology of Gravina Island Alaska: U.S. Geological Survey Bulletin 1373, 41 p.}{Deposit:: Elliott, R.L., Berg, H.C., and Karl, Susan, 1978, map and table describing metalliferous and selected nonmetalliferous mineral deposits, Ketchikan and Prince Rupert quadrangles, Alaska: U.S. Geological Survey Open-file Report, 78-73-B,17 p., scale 1:250,000.}{Deposit:: Koch, R.D., and Elliott, R.L., 1978, Analyses of rock samples from Ketchikan quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 78-156-A, 162 p., 1 sheet, scale l:250,000.}{Deposit:: Berg, H.C., Elliott, R.L., and Koch, R.D., 1988, Geologic map of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Mineral Investigations Series Map MF-1807,27 p., scale 1:250,000.}{Deposit:: Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.}
ReporterH.C. Berg