Big Six

Prospect, Probably inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; copper; pyrite
Gangue minerals calcite

Geographic location

Quadrangle map, 1:250,000-scale CR
Quadrangle map, 1:63,360-scale B-1
Latitude 55.46748
Longitude -132.18321
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Big Six prospect is at an elevation of about 1,200 feet, about 1.2 mile north-northwest of triangulation station Ren near the southeast tip of the Kasaan Peninsula. The prospect is about 0.5 mile west of the center of section 10, T. 74 S., R. 87 E.

Geologic setting

Geologic description

The Big Six is an old prospect that was first described by Brooks in 1902 and has only been mentioned in secondary sources since. Chalcopyrite and pyrite occur in an altered zone in limestone near its contact with greenstone. Native copper occurs along joints. Workings consist of a few open cuts. Brooks' location is presumably reliable, but recent mapping in the area by by Eberlein and others (1983) shows only a large Ordovician and Silurian diorite pluton at the south end of the Kasaan Peninsula.
Geologic map unit (-132.184890598984, 55.4671200819322)
Mineral deposit model Chalcopyrite in altered zone in limestone.
Alteration of deposit Limestone hostrock is altered.

Production and reserves

Workings or exploration Open cuts.
Indication of production None