| Basis for focus area |
Permissive geology, substantial ARDF occurrences with porphyry copper characteristics and known deposits. |
| Identified resources |
Identified resources of copper, molybdenum, gold, and silver. |
| Production |
None recorded. |
| Status |
Past and current exploration. |
| Estimated resources |
Taurus: 68.3 Mt at 0.28% Cu, 0.039% MoS2; Mosquito: 10 Mt at 0.35% Cu and 0.03% MoS2; Peak: c11.624 Mt at 0.153% Cu, 0.114 oz/t Au, and 0.421 oz/t Ag. |
| Geologic maps |
New 1:63,360-scale mapping in progress in the Tanacross and Eagle quadrangles. Large sections of area are unmapped at better than 1:250,000 scale. |
| Geophysical data |
Inadequate aeromagnetic coverage, will be partly addressed by planned Phase 1 EMRI data acquisition. |
| Favorable rocks and structures |
Calc-alkaline to alkaline arc-related granite, monzodiorite, granodiorite, monzonite plutons. Mildly alkaline peraluminous biotite granite and monzonite plutons. |
| Deposits |
Taurus, Peak Gold, and Mosquito. |
| Evidence from mineral occurrences |
ARDF occurrences including Taurus, Bluff, Dennison, Mosquito, Little Enchilada, Huneedoo, Section 21, Quartz Porphyry, Peak, Road Metal, Little Whiteman, Shorty Creek, Section 21, Quartz Porphyry. |
| Geochemical evidence |
Mo, Cu, Ag, Pb, Zn in rock chip and soil geochemical anomalies. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
Favorable calc-alkaline felsic to intermediate arc rocks with locally reactive host rocks. This is a permissive geologic terrane, known deposits, occurrences. |
| Cover thickness and description |
Unknown, but exposed porphyry systems show evidence of 45ยบ of post-mineral tilting, strongly suggesting that portions or entire systems are buried and/or concealed and dismembered. |
| 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. |
