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Bicchulite

Year of discovery: 1973 (Japan as the first occurence in the World)

Locality list: 4 localities of bicchulite

• Ca₂Al₂SiO₆(OH)₂
• [Ca²⁺₂][(OH)₂|Al₂SiO₆]^4-

• Class: Sodalite group
• Class: Tecto-Aluminosilicate - Hydroxide

• Polymorph: Kamaishilite (Tetragonal)

• Color: White-Gray
• Luster: Vitreous
• Diaphaneity: Translucent

• Habit: Powder

• System: Cubic
• Group: (-4)3m, I(-4)3m
• Lattice: a=8.8

Etymology: Bicchu, old county name of western part of Okayama prefecture, Japan