Facts
- Chemical formula
- NaNa₂(Mg₂Fe³⁺₂Li)Si₈O₂₂F₂
- Crystal system
- Monoclinic
- Number of elements
- 7
- IMA status
- Redefined
- Type locality
- Verkhnee Espe massif
- Named after
- Fluorine
- Colour
- black
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q18119151