Copper vs Galena
| Property | Copper | Galena |
|---|---|---|
| Formula | Cu | PbS |
| Crystal System | Cubic (Isometric) | Cubic (Isometric) |
| Mineral Class | 01 Native Elements | 02 Sulfides and Sulfosalts |
| Mohs Hardness | 2.5-3.0 | 2.5-2.8 |
| Color | Copper-red, tarnishes to brown/green | Lead-gray |
| Luster | Metallic | Metallic |
| Streak | Copper-red | Lead-gray |
| Transparency | Opaque | Opaque |
| Cleavage | None | Perfect cubic {001} |
| Fracture | Hackly | Subconchoidal |