Graphite
Physical Properties
| Color | black |
| Form/Habit | foliated masses |
| Lusture | sub metallic |
| Streak | black |
| Hardness | 1-2 |
| Cleavage | perfect 1 set basal |
| Fracture | flaky |
| Specific Gravity | 2.1-2.2 (low) |
| Chemical Composition | C |
| Crystal System | hexagonal (rhombohedral) |
| Diagnostic Properties | sub metallic lusture, perfect 1 set basal cleavage, flaky fractures |