Class: Native element
Hardness: 1 - 2
Density: 2.1 - 2.3
Lustre: Dull metallic, greasy feel
Habit: Fine grained aggregate
| ||Crystal System: Hexagonal|
Cleavage: Perfect basal
Reaction with HCl: None
Identification in hand sample:
Softness and lustre are best indicators.
Common in pelitic metamorphic rocks such as phyllite, slate and schist. Produced as a result of decomposition of organic material.
Industrial / ecomonic uses:
Used in pencil leads and as a dry lubricant.
Due to its softness, graphite is usually quite messy!