Azurite vs Sulfur
| Property | Azurite | Sulfur |
|---|---|---|
| Formula | Cu3(CO3)2(OH)2 | S |
| Crystal System | Monoclinic | Orthorhombic |
| Mineral Class | 05 Carbonates and Nitrates | 01 Native Elements |
| Mohs Hardness | 3.5-4.0 | 1.5-2.5 |
| Color | Azure blue, dark blue | Bright yellow, brownish yellow |
| Luster | Vitreous | Resinous |
| Streak | Light blue | White |
| Transparency | Transparent | Transparent |
| Cleavage | Perfect {011}, fair {100} | Poor {001}, {110} |
| Fracture | Conchoidal | Conchoidal to uneven |