IMA mineral species
Böhmite
AlO(OH)
Hydroxide mineral.
Properties
⛏ Mohs hardness3.5
💅🪙🍶🔪💎
A copper coin scratches it.
⚖ Density3.41 g/cm³
Heavy
🔷 Orthorhombic✏️ streak white
| Chemical formula | AlO(OH) |
|---|---|
| Elements | Al, O, H |
| Crystal system | Orthorhombic |
| Mohs hardness | 3.5 |
| Density | 3.41 g/cm³ |
| Streak | white |
| Color | — |
| IMA symbol | Bhm |
| Nickel–Strunz class | 4.FE.15 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3.5: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
Learn more
- Böhmite on Mindat.org
- Wikipedia article
- Wikidata item Q409757 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Orthorhombic
RedYellowBrownGrayWhite & Clear
Soft, Scratches Easily