Commodities
PrimaryLead, Zinc, Silver, Gold, Copper
Commodity typeM
Deposit
Model54: Porphyry Cu (North America)85: Polymetallic veins
Materials
Ore mineralsChalcopyrite, Galena, Pyrite, Sphalerite
GangueQuartz
Geology
AlterationSilicification and sulfidization of granite porphyry
Economic & production
Development statusOccurrence
Identification
Deposit ID10000187
MRDS IDA010224
Alternate namesNelson and Pitcher
RegionNA
Data scoreB
Coordinates56.05366, -130.06981
References
Westgate, L.G., 1922, Ore deposits of the Salmon River district, Portland Canal region: U.S. Geological Survey Bulletin 722, p. 117-140.Smith, J.G., 1973, A Tertiary lamprophyre dike province in southeastern Alaska: Canadian Journal of Earth Sciences, v. 10, p. 408-420.Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.