Facts
- Chemical formula
- K(MgAl₂)(Al₅Mg)(BO₃)₃(Si₆O₁₈)(OH)₃O
- Crystal system
- Trigonal
- Mohs hardness
- 7.0
- Number of elements
- 7
- IMA status
- Approved
- Named after
- Shigenori Maruyama
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q18614733