Apatite vs Quartz
| Property | Apatite | Quartz |
|---|---|---|
| Formula | Ca5(PO4)3(F,Cl,OH) | SiO2 |
| Crystal System | Hexagonal | Trigonal |
| Mineral Class | 08 Phosphates, Arsenates, and Vanadates | 09 Silicates |
| Mohs Hardness | 5.0 | 7.0 |
| Color | Green, blue, yellow, violet, colorless | Colorless, white, purple, pink, brown, black |
| Luster | Vitreous | Vitreous |
| Streak | White | White |
| Transparency | Transparent | Transparent |
| Cleavage | Poor {0001} | None |
| Fracture | Conchoidal to uneven | Conchoidal |