Copper vs Rutile
| Property | Copper | Rutile |
|---|---|---|
| Formula | Cu | TiO2 |
| Crystal System | Cubic (Isometric) | Tetragonal |
| Mineral Class | 01 Native Elements | 04 Oxides and Hydroxides |
| Mohs Hardness | 2.5-3.0 | 6.0-6.5 |
| Color | Copper-red, tarnishes to brown/green | Reddish-brown, red, black, golden |
| Luster | Metallic | Adamantine |
| Streak | Copper-red | Light brown |
| Transparency | Opaque | Translucent |
| Cleavage | None | Good {110} |
| Fracture | Hackly | Conchoidal to uneven |