Andalusite
Andalusite is a mineral with the chemical formula Al2SiO5. It has a Mohs hardness of 7.5 and vitreous to pearly luster.
Andalusite properties
| Type | Mineral |
|---|---|
| Chemical formula | Al2SiO5 |
| Mohs hardness | 7.5 |
| Luster | Vitreous to pearly |
| Typical colors | Green, brown, gray, pink, and colorless |
| Formation | Metamorphic rock, typically formed under high temperatures and moderate pressures |
| Rarity | 6 / 10 |
Mohs hardness 7.5 — hard
1 · Talc5 · Apatite10 · Diamond
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