Facts
- Chemical formula
- Ca(Y,REE,Ca,Na,Mn)₁₅Fe²⁺(P,Si)Si₆B₃O₃₄F₁₄
- Crystal system
- Trigonal
- Mohs hardness
- 5.0
- Elements in formula
- Calcium, Yttrium, Sodium, Manganese, Iron, Phosphorus, Silicon, Boron, Oxygen, Fluorine
- Number of elements
- 10
- IMA status
- Approved
- Named after
- Evgeniy G. Proshchenko
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q2113240