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Fluorophlogopite

Year of discovery: 1935 (Monte Calvario, Italy), 1965 (Japan)

Locality list: 2 localities of fluorophlogopite

• KMg₃AlSi₃O₁₀F₂
• KMg₃AlSi₃O₁₀(F,OH)₂
• [K⁺][Mg²⁺₃][F₂|AlSi₃O₁₀]^7-

• Class: Trioctahedral < True mica group < Mica supergroup
• Class: Phyllo-Aluminosilicate - Fluoride
• Radioactive: Very weak

• Mg => Fe: Fluorannite

• Al => Fe: Fluorotetraferriphlogopite

• F => OH: Phlogopite

• KSi => BaAl: => Fluorokinoshitalite

• Mg_0.5Al => Si: Yangzhumingite

• MgAl => LiSi: Tainiolite
• MgAl => NaSi: Shirokshinite

• Color: Pale yellow
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 2-3
• Density: 2.8

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=5.3, b=9.2, c=10.1, β=100.1