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Properties of magnetite.
| Properties | Magnetite |
|---|---|
| Molecular formula | Fe3O4 |
| Crystal structure | Cubic |
| Density (g/cm3 ) | 5.18 |
| Melting point (°C) | 1583–1597 |
| Boiling point (°C) | 2623 |
| Color | black |
| Hardness | 5.5 |
| Type of magnetism | ferrimagnetic |
| Curie temperature (K) | 580 |
| Ms at 300 K (A·m2/kg) | 92–100 |
| Magnetism (nanoparticles) | Superparamagnetic |
| Lustre | Metallic |
| Diaphaneity | Opaque |
| Crystal System | Isometric |
| Birefringence | Isotropic minerals have no birefringence |
| Refractive Index values | n = 2.42 |
