Facts
- Chemical formula
- Ba₂(Mn,Fe,Ti)Si₂O₆(O,OH,Cl,F)₂ * 3H₂O or near
- Number of elements
- 9
- IMA status
- Approved
- Type locality
- Esquire No. 7 claim, Big Creek
- Named after
- William E. ver Planck
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q2692744