| Basis for focus area |
ARDF occurrences, prospectivity mapping analysis (Jones and others, 2015; Karl and others, 2016). |
| Identified resources |
Historical production of gold. |
| Production |
Production variable by district. |
| Status |
Past mining, variable by district. |
| Estimated resources |
None. |
| Geologic maps |
Statewide geologic map database; Wilson, Hults and others (2015), scale 1:1,584,000. |
| Geophysical data |
Mostly (>90%) inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Bedrock exposures in known or suspected mineral districts containing lode gold, Sn-W, PGE, and(or) REE mineralization. |
| Deposits |
See linked geodatabase from Karl and others (2016) for placer district names. |
| Evidence from mineral occurrences |
ARDF occurrences. |
| Geochemical evidence |
Au, Ag, Ti, W anomalies in stream sediment; Au, Sn, Ti, PGE, REE minerals in heavy mineral concentrate. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
Permissive geologic terrane and known occurrences. |
| Comments |
See linked geodatabase from Karl and others (2016) for placer district names and associated resources/commodities. |
| Cover thickness and description |
Unknown. |
| Authors |
Douglas C. Kreiner, James V. Jones III, Melanie B. Werdon. |
| New data needs |
New mapping, landscape analysis and modeling using new elevation data, 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. |
