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Bavenite

Year of discovery: 1901 (Seula mine, Italy), 2005 (Japan)

Locality list: 2 localities of bavenite

• Ca₄Be₂Al₂Si₉O₂₆(OH)₂
• [Ca²⁺₄][(OH)₂|Be²⁺₂Al₂Si₉O₂₆]^8-

• Class: Ino-Beryllium-Aluminosilicate - Hydroxide

• AlO => Be(OH): Bohseite (Series)

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

• Cleavage: Perfect on {001} (1 plane), Good on {100} (1 plane)
• Hardness: 5.5
• Density: 2.7

• System: Orthorhombic
• Group: mmm, Cmcm
• Lattice: a=19.4, b=23.2, c=5.0