Unnamed (near Crescent Glacier)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Au
Ore minerals arsenopyrite; chalcopyrite; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale A-3
Latitude 61.02
Longitude -147.91
Nearby scientific data Find additional scientific data near this location
Location and accuracy At terminus of Cresent Glacier. Accurate within 1,000 ft. Locality A-18 of Jansons and others (1984).

Geologic setting

Geologic description

Quartz float contains pyrite, arsenopyrite, and chalcopyrite. A float sample contained no detectable gold and 0.03 oz/ton Ag. Bedrock in the vicinity is the Late Cretaceous metasedimentary rocks of the Valdez Group. A minor amount of placer gold present (Jansons and others, 1984).
Geologic map unit (-147.912048778847, 61.0194417955709)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Late Cretaceous or younger.

Production and reserves

Workings or exploration Quartz float sample contained no detectable gold and 0.03 oz/ton Ag. Placer gold was present in minor amounts. Jansons and others (1984) reported low mineral development potential.
Indication of production None


MRDS Number A106191
Reporters D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS)
Last report date 7/30/1998