Cape Chiniak

Prospect, Active

Commodities and mineralogy

Main commodities Pt
Ore minerals platinum

Geographic location

Quadrangle map, 1:250,000-scale KD
Quadrangle map, 1:63,360-scale C-1
Latitude 57.62
Longitude -152.15
Nearby scientific data Find additional scientific data near this location
Location and accuracy Approximate location is along the coast west of Cape Chiniak. Location is accurate to within 1 mile.

Geologic setting

Geologic description

Platinum has been dredged off the coast of Cape Chiniak by fishermen using suction dredges. The source may be mafic and ultramafic rocks in the Ghost Rocks Formation.
Geologic map unit (-152.152163080669, 57.6192262707718)
Mineral deposit model Placer PGE-Au (Cox and Singer, 1986; model 39b).
Mineral deposit model number 39b

Production and reserves

Workings or exploration Platinum dredged by fishermen using suction dredges off Cape Chiniak (S.W. Nelson, USGS, oral communication, 1992).
Indication of production Yes


MRDS Number A106317
Reporters S.H. Pilcher (Anchorage)
Last report date 10/13/1998