Unnamed (near head of North Baird Glacier)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities Ag; Cu
Ore minerals bornite
Gangue minerals epidote; quartz

Geographic location

Quadrangle map, 1:250,000-scale SD
Quadrangle map, 1:63,360-scale B-3
Latitude 57.32838
Longitude -132.75516
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is in the saddle between peaks 5919 and 5765, about 5.2 miles east of the east end of Glory Lake. It is 0.3 mile southwest of the center of section 28, T. 52 S., R. 79 E.

Geologic setting

Geologic description

This occurrence consists of bornite that occurs in an aplite dike, in a quartz vein, in a pegmatite dike, and along an epidotized fracture in hornblende-biotite quartz diorite (Clark and others, 1970 [OF 70-73]). The area is largely unmapped but the age of the rocks is probably Tertiary or Cretaceous (Gehrels and Berg, 1992). Samples contained up to 7,000 parts per million (ppm) copper and 30 ppm silver.
Geologic map unit (-132.756859131491, 57.3280452130078)
Mineral deposit model Bornite disseminated in plutonic rocks and along fractures.
Age of mineralization Younger than what are probably Tertiary or Cretaceous plutonic rocks.
Alteration of deposit Bornite in thin quartz veins and along epidotized fractures.

Production and reserves

Workings or exploration Only surface sampling by government geologists.
Indication of production None

References