Facts
- Country
- Italy
- Minerals
- 1
- First described here
- Johannsenite
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q46131
Minerals first described here · 1
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Johannsenite | CaMn²⁺Si₂O₆ | Monoclinic | 6.0 | — |