Center Star

Prospect, Inactive

Commodities and mineralogy

Main commodities Au; Cu
Ore minerals arsenopyrite; chalcopyrite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale HE
Quadrangle map, 1:63,360-scale B-6
Latitude 63.26
Longitude -149.54
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Center Star prospect is at an elevation of about 2,700 feet on the broad flat ridge between Costello Creek and Colorado Creek. It is in sec. 18, T. 19 S., R. 10 W., of the Fairbanks Meridian. Access to the Center Star prospect is from the road to the Dunkle Coal mine. The Center Star prospect may overlap with the Liberty prospect (HE028). Accuracy of location is to within 0.5 mile.

Geologic setting

Geologic description

Thick Quaternary glacial deposits and Upper Tertiary sedimentary strata cover most of the older bedrock in this area. Regionally, the main geologic feature is the northeast-trending Chulitna fault, which separates a sequence of Upper Jurassic to Upper Triassic(?) crystal tuff, argillite, chert, graywacke, and limestone on the north, from Upper Devonian to Lower Triassic volcanogenic and sedimentary rocks on the south. Faulting and shearing of the rocks has occurred, along with intrusions of Late Cretaceous dikes and stocks. As reported by Capps (1919), the Center Star prospect consists of arsenopyrite, pyrite and chalcopyrite disseminated in bluish dike rock.
Geologic map unit (-149.542289858102, 63.259528499712)
Age of mineralization Possibly Late Cretaceous or younger.

Production and reserves

Workings or exploration Minor open cut workings.
Indication of production None

Additional comments

This site may overlap the Liberty prospect (HE028).