Facts
- Chemical formula
- Ca₄₈Mg₁₆[AlSi₄O₁₅(OH)]₄(BO₃)₁₆(CO₃)₁₆·2(H₂O,HCl)
- Crystal system
- Trigonal
- Elements in formula
- Calcium, Magnesium, Aluminium, Silicon, Oxygen, Hydrogen, Boron, Carbon, Chlorine
- Number of elements
- 9
- IMA status
- Redefined
- Named after
- Alfred Harker
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3783369