Facts
- Chemical formula
- (K,Ca,Ba,☐)₂(Mg,Fe,Ca,☐)₂[(Si,Al)₁₃O₂₃(OH)₆](OH)·8H₂O
- Crystal system
- Orthorhombic
- Elements in formula
- Potassium, Calcium, Barium, Magnesium, Iron, Silicon, Aluminium, Oxygen, Hydrogen
- Number of elements
- 9
- IMA status
- Approved
- Type locality
- Graulay
- Named after
- Hillesheim
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q19841437