Facts
- Chemical formula
- CaMn²⁺Si₂O₆
- Crystal system
- Monoclinic
- Mohs hardness
- 6.0
- Number of elements
- 4
- IMA status
- Approved
- Type locality
- Franklin, Campiglia Marittima, Recoaro Terme
- Named after
- Albert Johannsen
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q2253090