Nome Complex Sed Cu

Region Alaska, Alaska
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Copper occurrences in carbonate rocks scattered across the region.
Identified resources None.
Production None recorded.
Status Unknown.
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 Mixed carbonate layers within the overall Nome Complex intermixed with the presence of mafic units.
Deposits None.
Evidence from mineral occurrences Multiple ARDF occurrences exhibiting characteristics of this deposit style have been identified.
Geochemical evidence Cu, Co, ┬▒Ag elevated in rock chip and Cu, Co, Ag, and Ga elevated in the streambed sediments.
Geophysical evidence No data.
Evidence from other sources Prospectivity analyses conducted by Karl and others (2016) show large areas of this region containing HUC's with medium to high prospectivity with medium to high certainty.
Comments Within the Nome Group throughout the Seward Peninsula, there are numerous known occurrences of chalcopyrite along carbonate-schist contacts.
Cover thickness and description Unknown.
Authors Douglas C. Kreiner, James V. Jones III, Melanie B. Werdon.
New data needs New geologic mapping, geophysical surveys and well-constrained 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.