Porcupine River Sn-W

Region Alaska, Alaska
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area ARDF occurrences, prospective geology, geochemical anomalies.
Identified resources None.
Production None recorded.
Status Unknown.
Estimated resources None.
Geologic maps No modern mapping better than 1:250,000 scale.
Geophysical data Partly (50%) adequate aeromagnetic coverage (Porcupine survey), other parts inadequate; inadequate aeroradiometric coverage.
Favorable rocks and structures Devonian and related evolved granitic rocks emplaced into continental margin successions including abundant carbonate.
Deposits None.
Evidence from mineral occurrences None.
Geochemical evidence None.
Geophysical evidence No data.
Evidence from other sources High prospectivity determination based on Karl and others (2016).
Comments This is a poorly mapped, geologic hole in the understanding of Alaska and contains a known peralkaline intrusive complex with REE-bearing minerals hosted in quartz veins and associated sparse placer workings suggesting upside prospectivity.
Cover thickness and description Unknown.
Authors Douglas C. Kreiner, James V. Jones III, Melanie B. Werdon.
New data needs New mapping, geophysics, and updated geochemical sampling.
Geologic mapping and modeling needs Mapping at 1:100,000 scale or better.
Geophysical survey and modeling needs None.
Digital elevation data needs IfSAR coverage is complete over entire focus area.