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Cancrinite [abbr. Ccn ]

Year of discovery: 1839 (Ilmen mountains, Russia), 1990 (Japan)

Locality list: A locality of cancrinite

• Na₆Ca₂Al₆Si₆O₂₄(CO₃)₂,2H₂O
• Na₆Ca₂Al₆Si₆O₂₄(CO₃,SO₄)₂,2H₂O
• [Na⁺₆][Ca²⁺₂][(CO₃)₂|(AlSiO₄)₆]^10-,2H₂O

• Class: Cancrinite group
• Class: Tecto-Aluminosilicate - Carbonate - Hydrate
• Soluble in: HCl

• Color: Grayish green, Yellow, Colorless, Orange
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent, Translucent

• Habit: Massive

• Cleavage: Perfect on {1010} (3 planes)
• Hardness: 5-6
• Density: 2.4

• System: Hexagonal
• Group: 6, P6₃
• Lattice: a=12.7, c=5.2

Etymology: G. Cancrin, Russian minister of finance