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Zeophyllite

Year of discovery: 1902 (Velké Březno, Czech), 1976 (Japan)

Locality list: 3 localities of zeophyllite

• Ca₁₃Si₁₀O₂₈F₈(OH)₂,6H₂O
• Ca₁₃Si₁₀O₂₈(F,OH)₁₀,6H₂O
• [Ca²⁺₁₃][(OH)₂|F₈|(Si₅O₁₄)₂]^26-,6H₂O

• Class: Phyllosilicate - Fluoride - Hydroxide - Hydrate

• Color: White
• Streak: White
• Luster: Pearly
• Diaphaneity: Translucent

• Cleavage: Perfect on {0001} (1 plane)
• Hardness: 3
• Density: 2.8

• System: Triclinic, Pseudohexagonal
• Lattice: a=9.3, b=9.3, c=13.2, α=90.0, β=110.0, γ=120.0