Facts
- Chemical formula
- Na₁₅Ca₃Mn₃Fe²⁺₃Zr₃Nb(Si₂₅O₇₃)(O,OH,H₂O)₃(OH,Cl)₂
- Crystal system
- Trigonal
- Elements in formula
- Sodium, Calcium, Manganese, Iron, Zirconium, Niobium, Silicon, Oxygen, Hydrogen, Chlorine
- Number of elements
- 10
- IMA status
- Approved
- Type locality
- Poudrette quarry
- Named after
- John Johnston O'Neill
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3882683