Unnamed (northeast flank of Paxson Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chrysocolla
Gangue minerals epidote; prehnite; quartz

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale A-4
Latitude 63.054
Longitude -145.5889
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of 3,600 feet on the northeast flank of Paxson Mountain, approximately one-half mile south of the Denali Highway. It is in the SE1/4NW1/4 section 35, T. 21 S., R. 11 E., Fairbanks Meridian. This occurrence corresponds to locality 6 in Rose and Saunders (1965) and to locality S92 in table 2 of Nokleberg and others (1991).

Geologic setting

Geologic description

This occurrence consists of a 2-foot pod of chrysocolla and quartz in a highly altered vesicular basalt of the Nikolai Greenstone of Late Triassic age (Rose and Saunders, 1965). A massive non-vesicular hornblende basalt or andesite dike (?) is exposed about 3 feet above the copper-bearing pod.
Geologic map unit (-145.591124397141, 63.0535796243084)
Mineral deposit model Basaltic Cu (Cox and Singer, 1986; model 23).
Mineral deposit model number 23
Age of mineralization Probably Cretaceous.
Alteration of deposit Alteration minerals noted in the basalt are quartz, epidote, and prehnite; copper mineral(s) are oxidized.

Production and reserves

Indication of production None

References