Unnamed (near Mount Seltat)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities Ag; Cu; Pb; W; Zn
Other commodities Au
Ore minerals chalcopyrite; galena; magnetite; pyrrhotite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale SK
Quadrangle map, 1:63,360-scale C-4
Latitude 59.6
Longitude -136.33
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about 0.7 miles east of the summit of Mount Seltat along a ridge that extends eastward from the summit. The location is approximate as the area of mineralization is described as occurring in 'talus piles that drain the north and south sides of the rugged eastern ridge of Mount Seltat.' (Still and others, 1991). It is shown as number 2 on sheet 1 by Still and others (1991).

Geologic setting

Geologic description

Ore minerals are found in talus piles along the north and south sides of a rugged ridge that extends to the east from Mount Seltat. The mineralized talus is probably derived from brown-black manganese-stained bands that crop out between elevations of 4,000 feet and 6,000 feet on the ridge. Gilbert and others (1991) and Still and others (1991) report that float and rubblecrop samples of skarn or massive sulfides contained up to 0.137 ppm gold, 173.1 ppm silver, 4.13 percent zinc, 8,400 ppm copper, 2.6 percent lead, and 1,285 ppm tungsten. Cretaceous to Tertiary intrusive rocks mapped to the east by Gilbert and others (1990) suggest a similar age for this mineralization and alteration.
Geologic map unit (-136.331854686623, 59.5996819864958)
Mineral deposit model Very little information. Probably a skarn (Cox and Singer, 1986; model 18b or 18c).
Mineral deposit model number 18b or 18c
Age of mineralization Probably Cretaceous or Tertiary based on the age of intrusive rocks mapped to the east by Gilbert and others (1990).
Alteration of deposit Skarn.

Production and reserves

Indication of production None

References