Copper vs Magnetite
| Property | Copper | Magnetite |
|---|---|---|
| Formula | Cu | Fe3O4 |
| Crystal System | Cubic (Isometric) | Cubic (Isometric) |
| Mineral Class | 01 Native Elements | 04 Oxides and Hydroxides |
| Mohs Hardness | 2.5-3.0 | 5.5-6.5 |
| Color | Copper-red, tarnishes to brown/green | Black |
| Luster | Metallic | Metallic |
| Streak | Copper-red | Black |
| Transparency | Opaque | Opaque |
| Cleavage | None | None |
| Fracture | Hackly | Conchoidal to uneven |