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Chabazite-Na

Year of discovery: 1998 (Rupe di Aci Castello, Italy), 1974 (Japan)

Locality list: 10 localities of chabazite-Na

• Na₂Al₂Si₄O₁₂,6H₂O
• (Na₂,Ca,K₂,Sr)Al₂Si₄O₁₂,6H₂O
• [Na⁺₂][(AlSi₂O₆)₂]^2-,6H₂O

• Class: Chabazite series < Chabazite group < Zeolite family
• Class: Tecto-Aluminosilicate - Zeolitic water
• Soluble in: HCl (Decompose)
• Radioactive: Very weak

• Polymorph: Gmelinite-Na (Hexagonal), Lévyne-Na (Levyne-Na) (Trigonal)

• Na₂ => Ca: Chabazite-Ca (Series)
• Na₂ => K₂: Chabazite-K (Series)
• Na₂ => Sr: Chabazite-Sr (Series)

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

• Habit: Rhombohedral
• Twin: Intrusive twin

• Cleavage: Distinct on {1011} (3 planes)
• Hardness: 4
• Density: 2.1

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=13.8, c=15.0

Etymology: Chalza (hail) in Greek

Synonym: Herschelite