Unnamed (west of Chitina River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Mo
Ore minerals chalcopyrite; molybdenite

Geographic location

Quadrangle map, 1:250,000-scale VA
Quadrangle map, 1:63,360-scale B-1
Latitude 61.495
Longitude -144.259
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located on a low ridge along the west side of the Chitina River, about 500 feet south of the north boundary of the Valdez B-1 topographic map. It is in the NE1/4 section 26, T. 4 S., R. 6 E., of the Copper River Meridian. This prospect is probably located to within one-quarter mile; it is locality 61 of Winkler and others (1981 [OFR 80-892-B]).

Geologic setting

Geologic description

Sparse chalcopyrite and molybdenite are disseminated in Jurassic (?) biotite granodiorite (Winkler and others, 1981 [OFR 80-892-B]; Winkler and others, 1981 [OFR 80-892-A]). The pluton is in metamorphic rocks that include mafic metavolcanic rocks of the Paleozoic Skolai Group.
Geologic map unit (-144.261087802176, 61.4945284669807)
Mineral deposit model Porphyry Cu-Mo (Cox and Singer, 1986; model 21a)
Mineral deposit model number 21a
Age of mineralization Jurassic?; the probable age of the granodiorite host rock (Winkler and others, 1981 [OFR 80-892-A]).

Production and reserves

Workings or exploration Probably only reconnaissance surface examination.
Indication of production None

Additional comments

This occurrence is in Wrangell-St. Elias National Park.

References