Unnamed (west of head of North Fork Rainy Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; oxidized copper mineral(s); pyrite

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale B-4
Latitude 63.3492
Longitude -145.9468
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of 4,700 feet west of the head of North Fork Rainy Creek. It is in the SW1/4SW1/4 section 13, T. 18 S., R. 9 E., Fairbanks Meridian. It corresponds to locality 17 of Rose (1965) and to locality S59 in table 2 of Nokleberg and others (1991).

Geologic setting

Geologic description

At this occurrence, chalcopyrite and secondary copper minerals are in a shear zone that strikes N70E (Rose, 1965). The mineralized zone is about 6.5 feet wide by 10 feet long and is hosted in pyrite-altered dacite porphyry that intrudes the Slana Spur Formation of Pennsylvanian age (Nokleberg and others, 1991).
Geologic map unit (-145.949062795892, 63.3487834995539)
Mineral deposit model Porphyry Cu (Cox and Singer, 1986; model 17).
Mineral deposit model number 17
Age of mineralization Late Paleozoic or younger.
Alteration of deposit Pyritization of dacite host rock; oxidation of copper minerals.

Production and reserves

Indication of production None

References