Commodities
PrimaryGold
Commodity typeM
Deposit
Model273: Low-sulfide Au-quartz vein
Materials
Ore mineralsGold, Pyrite
GangueQuartz
Geology
Host rockSchist
AlterationLocally, the wallrocks adjacent to the veins are bleached and pyritized.
Economic & production
Development statusProspect
Identification
Deposit ID10001558
MRDS IDA012306
Alternate namesLast Chance (Helm Bay), Beulah
RegionNA
Data scoreB
Coordinates55.64474, -131.99568
References
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.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.Brew, D.A., 1996, Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2319, 53 p., 1 sheet, scale 1:250,000.