Unnamed (northwest of Mud Lake)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcocite; chrysocolla

Geographic location

Quadrangle map, 1:250,000-scale MH
Quadrangle map, 1:63,360-scale A-4
Latitude 63.0432
Longitude -145.554
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of 3,100 feet on the northeast flank of Paxson Mountain, 1 mile northwest of Mud Lake. It is in the NE1/4NW1/4 section 1, T. 22 S., R. 11 E., Fairbanks Meridian. The occurrence corresponds to locality 4 in Rose and Saunders (1965).

Geologic setting

Geologic description

Several pieces of copper-stained float containing minor chalcocite occur in a frost boil at this location (Rose and Saunders, 1965). The float is vesicular basalt of Nikolai Greenstone of Late Triassic age. The metabasalt is partly altered to epidote.
Geologic map unit (-145.556221917734, 63.0427797805701)
Mineral deposit model Basaltic Cu (Cox and Singer, 1986; model 23).
Mineral deposit model number 23
Age of mineralization Late Triassic or Cretaceous.
Alteration of deposit The basalt is partly altered to epidote (Rose and Saunders, 1965); copper mineral(s) are oxidized.

Production and reserves

Indication of production None