IMA mineral species
Heulandite-K
(K,Ca,Na)₅(Si₂₇Al₉)O₇₂ · 26H₂O
Zeolite mineral.
Properties
| Chemical formula | (K,Ca,Na)₅(Si₂₇Al₉)O₇₂ · 26H₂O |
|---|---|
| Elements | K, Ca, Na, Si, Al, O, H |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Hul-K |
| Nickel–Strunz class | 9.GE.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Santorso, Italy
- 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
- Heulandite-K on Mindat.org
- Wikidata item Q3785393 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic