Over 20 manganese oxide minerals have been identified. They can be broadly categorized by primary oxidation state of manganese.
Contact Us| MnO | 53% TO 60% |
| SiO2 | 21% TO 25% |
| MgO | 4% TO 6% |
| CaO | 5% TO 8% |
| Al2O3 | 2.5% TO 4.5% |
| Fe2O3 | 1.5% MAX |
| C | 0.030% MAX |
| S | 0.030% MAX |
| P | 0.020% MAX |
| -30 | 100% Passing |
| -100 | 75% TO 65% Passing |
| -200 | 20% TO 50% Passing |
