Facts
- Chemical formula
- Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]
- Crystal system
- Triclinic
- Mohs hardness
- 5.5
- Number of elements
- 5
- IMA status
- Approved
- Type locality
- Kangerluarsuk fjord, Ilímaussaq, Naujakasik
- Named after
- riddle
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q380942