Apatite
Physical Properties
| Color | green |
| Form/Habit | massive |
| Lusture | vitreous |
| Streak | white |
| Hardness | 5 |
| Cleavage | perfect 1 sets |
| Fracture | conchoidal |
| Specific Gravity | 3.2 (moderate) |
| Chemical Composition | Ca5(PO4)3(OH, F, Cl) |
| Crystal System | hexagonal |
| Diagnostic Properties | perfect 2 sets of cleavage, conchoidal fractures |