Facts
- Chemical formula
- CaMn²⁺(SiO₄)
- Crystal system
- Orthorhombic
- Mohs hardness
- 6.0
- Number of elements
- 4
- IMA status
- Grandfathered
- Type locality
- Franklin
- Named after
- sky blue
- Discovered
- 1899
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q417518