Facts
- Chemical formula
- Ca₂Mn³⁺₃(SiO₄)(Si₂O₇)(OH)₃
- Crystal system
- Monoclinic
- Number of elements
- 5
- IMA status
- Approved
- Type locality
- Keweenaw County
- Named after
- Russell Patterson MacFall
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3842075