Biotite: hardness, streak, luster and crystal system
The properties that identify Biotite: its Mohs hardness, luster, streak colour and crystal system.
| Mineral | Mohs hardness | Luster | Streak | Crystal system |
|---|---|---|---|---|
| Biotite | 2.5–3.0 | Vitreous to pearly | White | Monoclinic |
Common questions
- How hard is Biotite on the Mohs scale?
- 2.5–3.0.
- What luster does Biotite have?
- Vitreous to pearly.
- What colour is the streak of Biotite?
- White.
- What crystal system does Biotite have?
- Monoclinic.
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