Facts
- Country
- Italy
- Minerals
- 1
- First described here
- Heulandite-K
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q46912
Minerals first described here · 1
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Heulandite-K | (K,Ca,Na)₅(Si₂₇Al₉)O₇₂ · 26H₂O | Monoclinic | — | — |