[ Top ] [ Japanese ]

Ammonioleucite

Year of discovery: 1986 (Japan as the first occurence in the World)

Locality list: A locality of ammonioleucite

• NH₄AlSi₂O₆
• (NH₄,K)AlSi₂O₆
• [NH₄⁺][AlSi₂O₆]^-

• Class: Leucite group < Zeolite family
• Class: Ammonium - Tecto-Aluminosilicate
• Radioactive: Very weak
• Substitution pseudomorph: Replace Analcime.

• NH₄ => K: Leucite

• Color: White
• Streak: White
• Luster: Resinous
• Diaphaneity: Opaque

• Habit: Tetracosahedron

• Hardness: 5.5-6
• Density: 2.3

• System: Tetragonal
• Group: 4/m, I4₁/a
• Lattice: a=13.2, c=13.7