| Basis for focus area |
Permissive tract for barite layers and veins from the Payette National Forest mineral resource assessment (Bookstrom and others, 1998). |
| Identified resources |
None. |
| Production |
No known production. |
| Status |
Unknown. |
| Estimated resources |
Unknown. |
| Geologic maps |
Lund (2004), scale 1:100,000. |
| Geophysical data |
Inadequate Rank 3 to 4 aeromagnetic and Rank 4 aeroradiometric coverage. |
| Favorable rocks and structures |
Favorable tracts for barite layers and veins are coincident with favorable tracts for Kuroko massive sulfides. Known barite layers and veins are hosted in the Triassic Huntington Formation of the Olds Ferry terrane, and in undivided greenstones of the Seven Devils Group of the Permian-Triassic Wallowa terrane (Karen Lund, USGS, unpublished data, 1997). |
| Deposits |
North Hornet mine and prospect area. |
| Evidence from mineral occurrences |
Bookstrom and others (1998). |
| Geochemical evidence |
Stream sediment geochemical anomalies for Ba indicate that all rock units favorable for Kuroko-type massive sulfides are also favorable for barite occurrences (K.C. Watts and H.D. King, unpublished data, 1996). |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
None. |
| Comments |
Bookstrom and others (1998) concluded that it was unlikely that barite layers and veins of the western Payette National Forest will be developed for barite in the next ten years. They represent relatively insignificant resources that would be high-cost producers in a market where many larger, lower-cost producers are idle. |
| Cover thickness and description |
Exposed at the surface. |
| Authors |
Jane M. Hammarstrom. |
| New data needs |
High resolution geophysics. |
| Geologic mapping and modeling needs |
None requested at this time. |
| Geophysical survey and modeling needs |
High resolution, Rank 1 aeromagnetic and aeroradiometric coverage. |
| Digital elevation data needs |
Lidar completed or in progress over focus area. |
