| PYROLUSITE |
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| Name | Pyrolusite |
| Formula | MnO2 |
| Hardness (Mohs) | 6-6.5 6 in individual crystals 2-6 in massive |
| Density | 5.06 |
| Crystal System | Tetragonal |
| Colour | Steel gray to a solid black |
| Lustre | Metallic lustre |
| Associated minerals | Hematite |
| Overall size of mineral specimen | 40 x 35 x 30 millimetres. |
| Location | Rukatunturi, Kuusamo, Finland |
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