Unnamed (mountains south of lower Butte Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale HE
Quadrangle map, 1:63,360-scale A-2
Latitude 63.017
Longitude -147.641
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located at an elevation of approximately 4,300 feet in the mountains south of lower Butte Creek, and 0.75 mile south of VABM 5896 (Way). The map site is near the south and of the west boundary of sec. 7, T. 22 S., on the boundary of R. 1 W., and R. 1 E., of the Fairbanks Meridian. The location is accurate to within 1,000 feet.

Geologic setting

Geologic description

The area of this occurrence is underlain by a 2,00-meter-thick sequence of Lower Permian? and Pennsylvanian, massive volcanic flows, breccias, and subordinate volcaniclastic rocks, all largely andesitic in composition (Wilson and others, 1998). The occurrence consists of pyrite and chalcopyrite disseminated in the volcanic rocks.
Geologic map unit (-147.643253471507, 63.0165474105825)
Mineral deposit model Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Mineral deposit model number 24a
Age of mineralization The sulfide minerals probably are syngenetic with their Lower Permian? and Pennsylvanian host rocks.

Production and reserves

Workings or exploration Surface sampling only.
Indication of production None