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Cahnite

Year of discovery: 1927 (Franklin mine, USA), 1996 (Japan)

Locality list: A locality of cahnite

• Ca₂B(OH)₄(AsO₄)
• Ca²⁺₂[AsO₄|H₄BO₄]^4-

• Class: Arsenate - Neso-Borate
• Soluble in: HCl

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

• Cleavage: Perfect on {110} (2 planes)
• Hardness: 3
• Density: 3.2

• System: Tetragonal
• Group: (-4), I(-4)
• Lattice: a=7.1, c=6.2