Facts
- Chemical formula
- NaCaAlF₆·H₂O
- Crystal system
- Monoclinic
- Mohs hardness
- 2.0
- Number of elements
- 6
- IMA status
- Grandfathered
- Type locality
- Ivigtuut cryolite deposit
- Named after
- Hans Peter Jørgen Julius Thomsen
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q409877