Gibbsite
Gibbsite is a mineral with the chemical formula Al(OH)3. It has a Mohs hardness of 3 - 4 (Mohs scale) and dull to pearly luster.
Gibbsite properties
| Type | Mineral |
|---|---|
| Chemical formula | Al(OH)3 |
| Mohs hardness | 3 - 4 (Mohs scale) |
| Luster | Dull to pearly |
| Typical colors | White, gray, yellow, brown |
| Formation | Formed by the weathering of aluminum silicate minerals and is commonly found in bauxite deposits. |
| Rarity | 4 / 10 |
Mohs hardness 3–4 — soft
1 · Talc5 · Apatite10 · Diamond
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