Azurite vs Sphalerite
| Property | Azurite | Sphalerite |
|---|---|---|
| Formula | Cu3(CO3)2(OH)2 | ZnS |
| Crystal System | Monoclinic | Cubic (Isometric) |
| 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 | Yellow, brown, black, red, green |
| Luster | Vitreous | Adamantine |
| Streak | Light blue | White to yellow-brown |
| Transparency | Transparent | Translucent |
| Cleavage | Perfect {011}, fair {100} | Perfect dodecahedral {110} |
| Fracture | Conchoidal | Conchoidal |