Central Brooks Range 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 No known resources.
Geologic maps No modern mapping better than 1:250,000 scale.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Highly evolved, fluorite-bearing granites emplaced into carbonate rocks resulting in greisen and skarn deposits.
Deposits Mount Hecht, Ernie Lake-no known past production.
Evidence from mineral occurrences ARDF occurrences.
Geochemical evidence Anomalous HUC's for Sn, W, Ta, and other pathfinder elements.
Geophysical evidence No data.
Evidence from other sources High prospectivity determination based on Karl and others, 2016.
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 Aeromagnetics and radiometrics collected at Rank 2.
Digital elevation data needs IfSAR coverage is complete over entire focus area.