Seward Peninsula-St. Lawrence Island PCD

Region Alaska, Alaska
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Permissive geology, substantial ARDF occurrences with porphyry copper characteristics.
Identified resources None.
Production None recorded.
Status Past exploration.
Estimated resources None.
Geologic maps No modern mapping better than 1:250,000 scale.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Weakly alkaline monzonite and syenite.
Deposits None.
Evidence from mineral occurrences Multiple Cu and Mo bearing ARDF occurrences.
Geochemical evidence Mo, Cu, Au, Ag, Pb, Zn.
Geophysical evidence No data.
Evidence from other sources Arc-related magmatism is suggestive of an ~ 90 Ma arc magmatic event.
Cover thickness and description Unknown.
Authors Douglas C. Kreiner, James V. Jones III, Melanie B. Werdon.
New data needs New mapping, geophysics, updated geochemical sampling.
Geologic mapping and modeling needs Mapping at 1:100,000 scale or better.
Geophysical survey and modeling needs Aeromagnetics and radiometrics collected at Rank 2.
Digital elevation data needs IfSAR coverage is complete over entire focus area.