Unnamed (near Mount Miramar)

Prospect, Undetermined

Commodities and mineralogy

Main commodities Ag; Cu; Pb; Zn
Ore minerals galena; pyrite; sphalerite; tetrahedrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CR
Quadrangle map, 1:63,360-scale B-5
Latitude 55.32094
Longitude -133.58832
Nearby scientific data Find additional scientific data near this location
Location and accuracy The location of this prospect is from an old, small-scale map that lacks topographic contours. For this record, the prospect is about 0.5 mile east of Mount Miramar near the center of section 32, T. 75 S., R. 78 E. The location is probably accurate to within 0.5 mile.

Geologic setting

Geologic description

A silver-lead-zinc(-quartz?) vein in Silurian or Ordovician slate and argillite of the Descon Formation is exposed for nearly 300 feet along the south bank of a small creek and in old opencuts (Roehm, 1936 [PE 119-3]). The vein averages 18 to 24 inches thick and contains irregular masses of intergrown sphalerite and galena, with small amounts of pyrite and tetrahedrite. A sample across 22 inches of the vein contained a trace of gold, 9.20 ounces of silver per ton, 0.3 percent copper, 6.4 percent lead, and 15.3 percent zinc. A large Cretaceous granitic pluton crops out less than a mile to the south (Eberlein and others, 1983; Brew, 1996).
Geologic map unit (-133.590003503815, 55.3205926995677)
Mineral deposit model Polymetallic vein (Cox and Singer, 1986; model 22c).
Mineral deposit model number 22c
Age of mineralization May be related to the large Cretaceous granitic pluton to the south.

Production and reserves

Workings or exploration A few open cuts.
Indication of production None