Unnamed (near Kasaan Mountain)

Prospects, Probably inactive

Commodities and mineralogy

Main commodities Ag; Au; Pb
Other commodities Ba
Ore minerals chalcopyrite; galena; sphalerite; tetrahedrite
Gangue minerals barite; calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale CR
Quadrangle map, 1:63,360-scale C-2
Latitude 55.54281
Longitude -132.36124
Nearby scientific data Find additional scientific data near this location
Location and accuracy The location of these prospects is uncertain other than that they are in the vicinity of Kasaan Mountain. For this record, the site is arbitrarily plotted at the top of Kasaan Mountain in the NW1/4 section 16, T. 73 S., R. 86 E. The prospects may be a mile or more from this location.

Geologic setting

Geologic description

Wright (1915) mentions vein deposits 1 to 5 feet wide that were prospected at some uncertain location on Kasaan Mountain. They are distinctly different from the many Cu-Fe skarn deposits on the Kasaan Peninsula in that the veins contain galena, tetrahedrite, sphalerite, and chalcopyrite; the gangue is quartz, calcite, and barite, and the veins were valued for their lead, silver, and gold content. No other information is available. A large Silurian or Ordovician diorite pluton is exposed north of Kasaan Mountain and the layered rocks in the vicinity consist of Silurian or Ordovician andesite and metasedimentary rocks (Eberlein and others, 1983; Brew, 1996).
Geologic map unit (-132.362922972914, 55.5424468256337)
Mineral deposit model Quartz vein with lead, silver, and gold.
Age of mineralization The veins are younger than the Silurian or Ordovician host rocks.

Production and reserves

Workings or exploration None mentioned.
Indication of production None

Additional comments

The Sealaska Corporation holds the subsurface rights to the land in the vicinity of Kasaan Mountain.