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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]


(ˈɪl məˌnaɪt)

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]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
References in periodicals archive ?
There are two main groups, he says, those that can accumulate increased amounts of rare earth elements in their structure--garnets, zircons, apatites, and perovskites--and those whose structure can accumulate only limited contents of these trace minerals--chrome-spinels, ilmenites, and micas.
In the present study, the occurrence of (Al, [Fe.sup.3+])-(F, OH)-bearing titanites in assemblages with ilmenites and magnetites are described from a polymetamorhic metabasite environment of the Chynov area.
However, ilmenites from tholeiites tend to have lower [Al.sub.2][O.sub.3] and lower Ti[O.sub.2] concentrations (Fig.
Two of the anomalies are spatially and directly associated with two diamonds and several garnets and ilmenites recovered from previous soil sampling programmes.
In addition to diamonds, we have found indicator minerals such as garnet, ilmenite, olivine and a mantle xenolith fragment in soil samples within the MSC Project area.