Kuskokwim Mountains 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 Identified resources of copper, gold, and molybdenum.
Production None recorded.
Status Current and past exploration.
Estimated resources Chicken Mountain: 14.5 Mt at 0.02% Cu, 0.035% MoS2, and 1.2 g/t Au.
Geologic maps No modern mapping better than 1:250,000 scale.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Mildly reduced diorite and granodiorite of broad arc affinities.
Deposits Chicken Mountain.
Evidence from mineral occurrences Numerous epithermal and sparse porphyry ARDF occurrences-epithermal may be an indication of a shallow porphyry-related environment.
Geochemical evidence Mo, Cu, Ag, Pb, Zn.
Geophysical evidence No data.
Evidence from other sources Arc to backarc magmatic signatures are permissive for porphyry systems.
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.