| Mineral | Gibbsite |
|---|---|
| Formula | Al(OH)3 |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | Perfect on {001} |
| Color | White, Light gray, Light green, Reddish white, Reddish yellow |
| Density | 2.4 – 2.4 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Irregular/Uneven |
| Hardness | 2.5 - 3.0 |
| Lustre | Vitreous, Sub-vitreous, Pearly, Dull, Earthy |
| Streak | White, or colored by impurities |
| Type Loc. | Richmond, Berkshire Co., MA, USA |
| Dana 8 Class | 6.3.1.1 |
| Strunz Class | 4/F.02-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 360 |