Commodities
PrimarySilver, Gold, Copper, Lead, Zinc
Commodity typeM
Deposit
Model85: Polymetallic veins
Materials
Ore mineralsChalcopyrite, Galena, Pyrite, Pyrrhotite, Sphalerite, Tetrahedrite
GangueCalcite, Quartz
Geology
Host rockSlate
Associated rockDiorite
AlterationIntense pyritization of country rocks. Hostrock identified as quartzite may represent silicification of pelitic country rock.
Economic & production
Development statusProspect
Identification
Deposit ID10000183
MRDS IDA010222
RegionNA
Data scoreB
Coordinates56.05283, -130.04564
References
Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.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.