IMA mineral species
Teruggite
Ca₄Mg[AsB₆O₁₁(OH)₆]₂(H₂O)₁₂·2H₂O
Borate mineral.
Properties
⛏ Mohs hardness2.5
💅🪙🍶🔪💎
Scratches with a fingernail.
🔷 Monoclinic✏️ streak white
| Chemical formula | Ca₄Mg[AsB₆O₁₁(OH)₆]₂(H₂O)₁₂·2H₂O |
|---|---|
| Elements | Ca, Mg, As, B, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | 2.5 |
| Density | — |
| Streak | white |
| Color | white, colorlessness |
| IMA symbol | Tgg |
| Nickel–Strunz class | 6.FA.25 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 2.5: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
Learn more
- Teruggite on Mindat.org
- Wikipedia article
- Wikidata item Q3984844 (source of this page's data – you can correct it there)
IMA mineral species
2–3
Monoclinic
White & Clear
Soft, Scratches Easily