| Gibbsite | |
|---|---|
 Gibbsite from Brazil | |
| General | |
| Category | Hydroxide minerals |
| Formula (repeating unit) | Al(OH)3 |
| Strunz classification | 04.FE.10 |
Gibbsite, Al(OH)3, is one of the mineral forms of aluminium hydroxide. It is often designated as γ-Al(OH)3 (but sometimes as α-Al(OH)3). It is also sometimes called hydrargillite (or hydrargyllite). It is an important ore of aluminium, and one of the main parts of the rock Bauxite.
