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Zirconolite

Year of discovery: 1989 (Afrikanda massif, Russia), 1991 (Japan)

Locality list: 6 localities of zirconolite

• CaZrTi₂O₇
• (Ca,Ce)Zr(Ti,Nb,Fe³⁺)₂O₇
• [Ca²⁺][Zr⁴⁺][Ti⁴⁺₂][O₇]^14-

• Class: Oxide
• Radioactive: Moderate

• Color: Black, Reddish brown
• Streak: Dark brown, Yellowish brown
• Luster: Resinous
• Diaphaneity: Translucent-Opaque

• Hardness: 5.5
• Density: 4.8

• System: Monoclinic (2M), Orthorhombic (3O), Tetragonal (3T)