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Miyahisaite

Year of discovery: 2012 (Japan as the first occurence in the World)

Locality list: A locality of miyahisaite

• Ba₃Sr₂(PO₄)₃F
• Ba₃(Sr,Ca)₂(PO₄)₃(F,OH,Cl)
• [Ba²⁺₃][Sr²⁺₂][F|(PO₄)₃]^10-

• Class: Hedyphane group < Apatite supergroup
• Class: Phosphate - Fluoride

• Sr₂ => NaCe: Kuannersuite-(Ce)

• Ba₃ => Sr₂Ca: Fluorstrophite
• Ba₃ => NaLaSr: Belovite-(La)
• Ba₃ => NaCeSr: Belovite-(Ce)

• Ba₃Sr₂ => Ca₅: Fluorapatite
• Ba₃Sr₂ => Sr₅: Stronadelphite

• Color: Colorless
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Hardness: 5

• System: Hexagonal
• Group: 6/m, P6₃/m
• Lattice: a=9.9, c=7.5

Etymology: Professor Michitoshi Miyahisa (1928-1983), Japanese economic geologist of Ehime University.