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Stronadelphite

Year of discovery: 2008 (Kirovskii mine, Russia), 1973 (Japan)

Locality list: 2 localities of stronadelphite

• Sr₅(PO₄)₃F
• Sr₅PO₄₃(F,OH)
• [Sr²⁺₅][F|(PO₄)₃]^10-

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

• Sr₅ => Ca₅: Fluorapatite
• Sr₅ => NaLaSr₃: Belovite-(La)
• Sr₅ => NaCeSr₃: Belovite-(Ce)
• Sr₅ => NaCeBa₃: Kuannersuite-(Ce)
• Sr₅ => Sr₂Ba₃: Miyahisaite
• Sr₅ => SrCa₄: Fluorcaphite
• Sr₅ => Sr₄Ca: Fluorstrophite

• Color: Colorless
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• System: Hexagonal
• Group: 6/m, P6₃/m
• Lattice: a=9.8, c=7.4