| Basis for focus area |
Presence of extensive carbonate host rocks, tectonic environment. |
| Identified resources |
Identified resources of cobalt and copper. |
| Production |
None recorded. |
| Status |
Past exploration drilling. |
| Estimated resources |
Bornite: Indicated and Inferred resource of 201,061,344 short tons grading 1.57% Cu (6,364,000 lbs Cu) and 0.02% Co (77,000 lbs Co). |
| Geologic maps |
No modern mapping better than 1:250,000 scale. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Thick sequences of carbonate rocks overlain by shale, intruded by younger granitic plutons. |
| Deposits |
Ruby Creek in ARDF which is part of the Bornite deposit in the Ambler district contains 6.364 million lbs of Cu and 77,000 lbs Co. |
| Evidence from mineral occurrences |
Numerous ARDF occurrences including Ruby Creek (Bornite), Sheep Creek, Omar, Peak, Frost and Deadfall. |
| Geochemical evidence |
Anomalous Co, Ge, Ga and/or Ag concentrations in stream sediments and rock chips. |
| 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 |
Carbonate rocks in this belt parallel a significant volcanogenic massive sulfide belt with numerous VMS/sediment hosted Cu deposits with defined resources (Cu, Pb, Zn, Au, Ag). |
| 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. |
