Calcite
Physical Properties
| Color | white |
| Form/Habit | tabular (rhombohedral) |
| Lusture | vitreous |
| Streak | white |
| Hardness | 3 |
| Cleavage | perfect 3 sets rhombohedral |
| Fracture | conchoidal |
| Specific Gravity | 2.71 (low) |
| Chemical Composition | CaCO3 |
| Crystal System | hexagonal (rhombohedral) |
| Diagnostic Properties | rhombohedral form, hardness of 3, perfect 3 sets rhombohedral cleavage, conchoidal fractures |