As you might expect, magnetite is magnetic.
Physical Properties |
|
| Chemical formula | Fe3O4 |
| Class | Oxide |
| Crystal system | Cubic |
| Habit | Typically octahedral May display contact or lamellar twins Massive or granular aggregates Disseminated as fine grains |
| Color | Black |
| Hardness | 6 |
| Specific gravity | 5.2 |
| Cleavage | None |
| Fracture | Subconchoidal |
| Luster | Metallic |
| Transparency | Opaque |
| Streak | Black |
| Special properties | Magnetic |
| after Perkins, 375 |
Magnetite in Hand Sample
Magnetite
Magnetite with fayalite
Euhedral magnetite crystals in a muscovite magnetite schist