| 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 |
Past and current exploration—NOTE: Orange Hill, Bond Creek, and others are now encapsulated by the Wrangell-St. Elias National Preserve, however other systems in the Slana region are on locatable ground. |
| Estimated resources |
Orange Hill: 320 Mt at 0.35% Cu, 0.03% MoS2 and 0.1 g/t Au; Bond Creek: 500 Mt at 0.4% Cu and 0.02% MoS2; Baultoff: 160 Mt at 0.09% Cu. |
| Geologic maps |
No modern mapping better than 1:250,000 scale. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Calc-alkaline intermediate to felsic, arc-related monzonite, granite, diorite porphyries. |
| Deposits |
Orange Hill, Bond Creek, Carl Creek, Baultoff, Horsfeld. |
| Evidence from mineral occurrences |
ARDF occurrences including West Green, Grubstake, Orange Hill, Bond Creek, Baultoff, etc. |
| Geochemical evidence |
Cu, Mo, Pb, Zn anomalies in rock chips and streambed sediments. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
Favorable calc-alkaline felsic to intermediate arc rocks with locally reactive host rocks. |
| 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. |
