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Zektzerite

Year of discovery: 1976 (Washington pass, USA), 2022 (Japan)

Locality list: A locality of zektzerite

• LiNaZrSi₆O₁₅
• LiNa(Zr,Ti,Hf)Si₆O₁₅
• [Li⁺][Na⁺][Zr⁴⁺][(Si₂O₅)₃]^6-

• Class: Inosilicate (Double chain)
• Fluorescence: UV excitation (Blue)

• LiNa => K₂: Dalyite

• Color: Colorless, Pink
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Perfect on {100} and {010} (2 planes)
• Hardness: 6
• Density: 2.8

• System: Orthorhombic
• Group: 2/m2/m2/m, Cmca
• Lattice: a=14.3, b=17.3, c=10.1