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Leucite [abbr. Lct ]

• KAlSi₂O₆
• [K⁺][AlSi₂O₆]^-

• Class: Leucite group < Zeolite family
• Class: Tecto-Aluminosilicate
• Soluble in: HCl (Decompose)
• Radioactive: Very weak

• K => NH₄: Ammonioleucite

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

• Habit: Tetracosahedron

• Cleavage: Poor on {110} (2 planes)
• Hardness: 5.5-6
• Density: 2.5

• System: Tetragonal, Pseudocubic
• Group: 4/m, I4₁/a
• Lattice: a=13.1, c=13.8