| Basis for focus area |
Focus area outlines northeast trend of barite mines and prospects in southern Stevens County. |
| Identified resources |
Identified resources and historical production of barite. |
| Production |
Several deposits shipped a few hundred tons of ore in the 1940s. |
| Status |
Past mining. |
| Estimated resources |
Combined reserves of the Deer Park Barite No. 1 mine and Shallenberger mine: 8,000 tons of Measured and Indicated ore and 10,000 tons of Inferred ore. Allan barite mine: At least 1,400 tons of Measured and Indicated ore and 2,750 tons of Inferred ore. Cardinal mine: At least 1,100 tons of Measured and Indicated ore and 6,800 tons of Inferred ore are present at the site of the current mining operations. |
| Geologic maps |
Miller (1996), scale 1:48,000; Campbell and Raup (1964), scale 1:48,000. |
| Geophysical data |
Inadequate Rank 3 to 4 aeromagnetic and Rank 4 aeroradiometric coverage. |
| Favorable rocks and structures |
Mineralization of Precambrian aged sedimentary rocks of the Deer Trail Group, northeast-trending veins following bedding. |
| Deposits |
Shallenberger deposit (MRDS dep_id: 10180808), Allan barite, Cardinal barite mine (MRDS dep_id: 10204670), Deer Park, Hillside. |
| Evidence from mineral occurrences |
MRDS; Moen (1963). |
| Geochemical evidence |
No data. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
None. |
| Cover thickness and description |
Exposed at the surface. |
| Authors |
Daniel W. Eungard. |
| New data needs |
Geologic mapping, geochemistry. |
| Geologic mapping and modeling needs |
Existing mapping is at too coarse of resolution to show veins or bedding that control ore deposition. Major structures are well known but local structures could be identified. |
| Geophysical survey and modeling needs |
Not applicable to barite deposits. |
| Digital elevation data needs |
Lidar complete. |
