Facts
- Chemical formula
- (Na,Sr)₃(Fe³⁺,Mg)₁₀Ti₂Si₁₂O₃₇(H₂O,O,OH)₁₇
- Crystal system
- Monoclinic
- Number of elements
- 8
- IMA status
- Approved
- Type locality
- Umbozero mine
- Named after
- hazelnut
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q19833305