Facts
- Chemical formula
- (Nb,Ti)(Ca,Na,☐)₃(Ca,REE)₄(Si₂O₇)₂(OH)F₃
- Crystal system
- Monoclinic
- Number of elements
- 8
- IMA status
- Approved
- Type locality
- Rouma Island
- Named after
- Rouma Island
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q19861243