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Ilmenite (Photo) [abbr. Ilm ]

Year of discovery: 1827 (Ilmen Natural Reserve, Russia), 1891 (Japan)

Locality list: 832 localities of ilmenite

• FeTiO₃
• [Fe²⁺][TiO₃]^2-

• Class: Ilmenite group
• Class: Titanatee
• Soluble in: HCl
• Magnetism: Paramagnetic (Weak)
• Substitution pseudomorph: Replaced by Anatase or Rutile. (Leucoxene)

• Fe => Zn: Ecandrewsite
• Fe => Mg: Geikielite (Series)
• Fe => Mn: Pyrophanite (Series)
• Fe => Ca: Perovskite
• Fe => Sr: Tausonite
• Fe => Ba: Barioperovskite

• TiO₃ => SiO₃: Pyroxferroite

• Color: Black
• Streak: Brownish black
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Platy

• Cleavage: No, Parting on {0001} and {1011} (4 planes)
• Hardness: 5-6
• Density: 4.7

• System: Trigonal
• Group: (-3), R(-3)
• Lattice: a=5.1, c=14.1