| Basis for focus area |
Focus area of known manganese mineralization. |
| Identified resources |
Historical production of manganese. |
| Production |
Unknown. |
| Status |
Past mining. |
| Estimated resources |
No estimated resource data. |
| Geologic maps |
Pratt and others (1992), scale 1:250,000. |
| Geophysical data |
Adequate Rank 1 magnetic and aeroradiometric coverage available over southeast Missouri; See McCafferty and others (2019). |
| Favorable rocks and structures |
1.4 Ga felsic volcanic rocks and hypabyssal andesite-dacite intrusions. |
| Deposits |
Deposits and occurrences in Missouri Geological Survey database Inventory of Mines, Occurrences, and Prospects database (Missouri Geological Survey, 2021b). |
| Evidence from mineral occurrences |
Missouri Geological Survey database Inventory of Mines; Occurrences and Prospects (Missouri Geological Survey, 2021b). |
| Geochemical evidence |
Known favorable mineralogy. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
Drill core and mine information. |
| Cover thickness and description |
Less than 500 feet. |
| Authors |
Cheryl M. Seeger, Trevor Ellis. |
| New data needs |
Drill core logs, new 1:24,000 scale geologic maps. |
| Geologic mapping and modeling needs |
Considerable mapping exists but more could be done to pin down vent locations and hydrothermal systems. |
| Geophysical survey and modeling needs |
High resolution geophysical aeromagnetic and aeroradiometric coverage. |
| Digital elevation data needs |
Lidar mostly adequate; few small areas inadequate. |
