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Fluorapatite

Year of discovery: 1860 (Minillas mine, Chile, Sauberg mine, Germany, and Holmbush mine, UK), 1894 (Japan)

Locality list: 67 localities of fluorapatite

• Ca₅(PO₄)₃F
• Ca₅(PO₄,CO₃)₃(F,OH,Cl)
• Ca²⁺₅[F|(PO₄)₃]^10-

• Class: Apatite group - Apatite supergroup
• Class: Phosphate - Fluoride
• Soluble in: HCl, HNO₃
• Fluorescence: UV excitation (Orange), Phosphorescence, Thermoluminescence
• Most common species of apatite group, and it is included in most igneous rocks as an accessory mineral.

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

• Ca₅ => Ba₃Sr₂: Miyahisaite

• PO₄ => AsO₄: Svabite

• F => OH: Hydroxylapatite, Hydroxylapatite-M
• F => Cl: Chlorapatite

• Color: White, Colorless
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Opaque

• Habit: Prismatic, Platy

• Cleavage: Indistinct on {0001} and {1010} (4 planes)
• Hardness: 5
• Density: 3.2

• System: Hexagonal
• Group: 6/m, P6₃/m
• Lattice: a=9.4, c=6.9

Synonym: Apatite-(CaF) had been valid during 2008-2010.