| MAGNETITE |
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| Name | Magnetite crystals |
| Formula | Fe3O4 |
| Hardness (Mohs) | 5.5-6.5 |
| Density | 4.85-5.20 |
| Crystal System | Cubic |
| Colour | Black with a bluish hue |
| Lustre | Metallic lustre |
| Associated minerals | Chromite |
| Comment | Magnetite is a valuable source of iron ore |
| Size of individual crystals | 5-10 millimetres |
| Location | Kola Peninsula, Russia |
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