IMA mineral species
Crandallite
CaAl₃(PO₄)(PO₃OH)(OH)₆
Alunite supergroup, calcium aluminium basic phosphate mineral.
Properties
⛏ Mohs hardness5
💅🪙🍶🔪💎
A steel knife scratches it, it won't scratch glass.
| Chemical formula | CaAl₃(PO₄)(PO₃OH)(OH)₆ |
|---|---|
| Elements | Ca, Al, P, O, H |
| Crystal system | Trigonal |
| Mohs hardness | 5 |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Cdl |
| Nickel–Strunz class | 8.BL.10 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Varieties & related stones
Learn more
- Crandallite on Mindat.org
- Wikipedia article
- Wikidata item Q429813 (source of this page's data – you can correct it there)
IMA mineral species
5–6
Trigonal
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