Facts
- Chemical formula
- (UO₂)₆SO₄O₂(OH)₆·14H₂O
- Crystal system
- Triclinic
- Mohs hardness
- 2.0
- Number of elements
- 4
- IMA status
- Grandfathered
- Type locality
- Johanngeorgenstadt, Jáchymov
- Named after
- felt
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q2252074