Prospect, Undetermined

Commodities and mineralogy

Main commodities Ag; Cu; Zn
Other commodities Au; Pb
Ore minerals chalcopyrite; pyrrhotite

Geographic location

Quadrangle map, 1:250,000-scale CR
Quadrangle map, 1:63,360-scale B-2
Latitude 55.26305
Longitude -132.64357
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Campbell prospect is about 1.4 mile northwest of Mount Jumbo and about 0.3 mile east-southeast of the center of section 21, T. 76 S., R. 84 E.

Geologic setting

Geologic description

The Campbell prospect is in skarn near the contact of a small Cretaceous granodiorite stock that intrudes marble of the Wales Group of Late Proterozoic and Cambrian age (Herreid and others, 1978). The deposit consists of small, pyrrhotite-rich pods with chalcopyrite in the skarn. One sample contained 1,380 parts per million (ppm) copper, 20 ppm lead, 175 ppm zinc, 1.5 ppm silver, and a trace of gold. The prospect was explored by a 50-foot adit.
Geologic map unit (-132.645224126114, 55.2626985973423)
Mineral deposit model Copper skarn (Cox and Singer, 1986; model 18b).
Mineral deposit model number 18b
Age of mineralization Probably related to a nearby Cretaceous granodiorite intrusion.
Alteration of deposit Deposit probably is genetically related to the skarn host rock.

Production and reserves

Workings or exploration The only working consists of a 50-foot adit.
Indication of production None

Additional comments

The Campbell prospect is on or surrounded by lands that have been conveyed to the Sealaska Corporation, who hold the surface and subsurface rights, or the land is under application for transfer to them.