IMA mineral species
Cahnite
Ca₂[B(OH)₄](AsO₄)
Borate-arsenate mineral.
Properties
⛏ Mohs hardness3
💅🪙🍶🔪💎
A copper coin scratches it.
| Chemical formula | Ca₂[B(OH)₄](AsO₄) |
|---|---|
| Elements | Ca, B, O, H, As |
| Crystal system | Tetragonal |
| Mohs hardness | 3 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Cah |
| Nickel–Strunz class | 6.AC.70 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Care & Handling
- 🪶 Soft, Scratches Easily Mohs 3: softer than a steel knife, so it scratches easily. Store it apart from harder stones.
🌍 Where it's found
Type locality (where it was first described): Franklin, United States
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
- Cahnite on Mindat.org
- Wikipedia article
- Wikidata item Q3649812 (source of this page's data – you can correct it there)
IMA mineral species
3–4
Tetragonal
White & Clear
Soft, Scratches Easily