Facts
- Chemical formula
- (Zn,Fe)(Al,Fe)₂(AsO₄)(OH)₅
- Crystal system
- Triclinic
- Number of elements
- 6
- IMA status
- Approved
- Type locality
- Tsumeb Mine
- Named after
- Gerd Tremmel
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3760991
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3760991