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Kamaishilite (Photo)

Year of discovery: 1981 (Japan as the first occurence in the World)

Locality list: A locality of kamaishilite

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

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

• Polymorph: Bicchulite (Cubic)

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

• Cleavage: No
• Density: 2.8

• System: Tetragonal
• Lattice: a=8.9, c=8.8

• Coexist: Vesuvianite

Etymology: Kamaishi mine in Iwate prefecture, Japan, where this mineral was discovered for the first time.