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Bultfonteinite

Year of discovery: 1932 (Bultfontein mine, South Africa), 1976 (Japan)

Locality list: 3 localities of bultfonteinite

• Ca₂HSiO₄F,H₂O
• [Ca²⁺₂][F|HSiO₄]^4-,H₂O

• Class: Nesosilicate - Fluoride - Hydrate

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

• Cleavage: Distinct on {010} and {100} (2 planes)
• Hardness: 4.5
• Density: 2.7

• System: Triclinic, Pseudotetragonal
• Group: (-1), P(-1)
• Lattice: a=11.0, b=8.2, c=5.7, α=94.0, β=91.3, γ=89.9