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Calzirtite

Year of discovery: 1961 (Gornoozerskii complex, Russia), 1995 (Japan)

Locality list: 2 localities of calzirtite

• CaTiZr₃O₉
• [Ca²⁺][Ti⁴⁺][(ZrO₃)₃]^6-

• Class: Zirconate

• Color: Brown-Dark brown
• Streak: White
• Luster: Adamantine
• Diaphaneity: Transparent-Translucent

• Cleavage: Good
• Hardness: 6-7
• Density: 5.0

• System: Tetragonal
• Lattice: a=15.3, c=10.2

Etymology: Chemical composition