Azurite vs Chalcopyrite
| Property | Azurite | Chalcopyrite |
|---|---|---|
| Formula | Cu3(CO3)2(OH)2 | CuFeS2 |
| Crystal System | Monoclinic | Tetragonal |
| Mineral Class | 05 Carbonates and Nitrates | 02 Sulfides and Sulfosalts |
| Mohs Hardness | 3.5-4.0 | 3.5-4.0 |
| Color | Azure blue, dark blue | Brass-yellow, often with iridescent tarnish |
| Luster | Vitreous | Metallic |
| Streak | Light blue | Greenish-black |
| Transparency | Transparent | Opaque |
| Cleavage | Perfect {011}, fair {100} | Poor |
| Fracture | Conchoidal | Conchoidal to uneven |