Apatite vs Azurite
| Property | Apatite | Azurite |
|---|---|---|
| Formula | Ca5(PO4)3(F,Cl,OH) | Cu3(CO3)2(OH)2 |
| Crystal System | Hexagonal | Monoclinic |
| Mineral Class | 08 Phosphates, Arsenates, and Vanadates | 05 Carbonates and Nitrates |
| Mohs Hardness | 5.0 | 3.5-4.0 |
| Color | Green, blue, yellow, violet, colorless | Azure blue, dark blue |
| Luster | Vitreous | Vitreous |
| Streak | White | Light blue |
| Transparency | Transparent | Transparent |
| Cleavage | Poor {0001} | Perfect {011}, fair {100} |
| Fracture | Conchoidal to uneven | Conchoidal |