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A lustrous black to brownish titanium ore, essentially FeTiO3.
[After the Ilmen Mountains, a range of the southern Ural Mountains.]
(Minerals) a black mineral found in igneous rocks as layered deposits and in veins. It is the chief source of titanium. Composition: iron titanium oxide. Formula: FeTiO3. Crystal structure: hexagonal (rhombohedral)
[C19: from Ilmen, mountain range in the southern Urals, Russia, + -ite1]
a common black mineral, iron titanate, FeTiO3, an ore of titanium.
[1820–30; after the Ilmen Mountains in the S Urals, where first identified; see -ite1]
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|Noun||1.||ilmenite - a weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium|
atomic number 22, Ti, titanium - a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition