Facts
- Chemical formula
- (BiO)₄(UO₂)(AsO₄)₂·2H₂O
- Crystal system
- Triclinic
- Mohs hardness
- 3.5
- Number of elements
- 5
- IMA status
- Grandfathered
- Type locality
- Walpurgis Flacher vein
- Named after
- Walpurgis Flacher vein
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1531254