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Baddeleyite [abbr. Bdy ]

Year of discovery: 1892 (Kollonnagam, Sri Lanka), 1991 (Japan)

Locality list: 7 localities of baddeleyite

• ZrO₂
• [Zr⁴⁺][O₂]^4-

• Class: Oxide
• Soluble in: concentrated hot H₂SO₄
• Insoluble in: hot HCl, hot HNO₃, HF
• Fluorescence: Cathodo luminescence (Blue-Green)

• Zr => Ge: Argutite
• Zr => Mn: Pyrolusite (β), Ramsdellite (γ), Akhtenskite (ε)
• Zr => Ti: Rutile, Anatase, Brookite
• Zr => Pb: Scrutinyite (α), Plattnerite
• Zr => Sn: Cassiterite
• Zr => Si: Quartz (α), β-Quartz (β), Tridymite, Cristobalite, Coesite, Stishovite, Mogánite (Moganite)
• Zr => V: Paramontroseite
• Zr => U: Uraninite
• Zr => Th: Thorianite
• Zr => Ce: Cerianite-(Ce)
• Zr => Se: Downeyite
• Zr => Mo: Tugarinovite
• Zr => Te: Tellurite, Paratellurite

• Color: Brown-Colorless
• Streak: Pale brown
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {001} (1 planes), Good on {010} and {110} (3 planes)
• Hardness: 6.5
• Density: 6.0

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=5.2, b=5.2, c=5.3, β=99.2