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Ferrierite-Na

• Na₂Mg(Al,Si)₁₈O₃₆,9H₂O
• (Na₂,Mg,K₂)Mg(Si,Al)₁₈O₃₆,9H₂O
• [Na⁺₂][Mg²⁺][(Al,Si)₁₈O₃₆]^4-,9H₂O

• Class: Ferrierite series < Mordenite group < Zeolite family
• Class: Tecto-Aluminosilicate - Zeolitic water
• Radioactive: Very weak

• Na => K: Ferrierite-K
• Na₂ => Mg: Ferrierite-Mg

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

• Cleavage: Perfect on {100} (1 plane), Imperfect on {001} (1 plane)
• Hardness: 3-3.5
• Density: 2.1

• System: Monoclinic
• Group: 2/m, P2₂/n
• Lattice: a=18.9, b=14.2, c=7.5, β=90.0