noun. 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
Example sentences of the word ilmenite
Also present may be iron ore (ilmenite and/or magnetite) or bronze-colored biottie.
2. Noun, singular or mass
Diamonds and gold satisfy these requirements and are the best-known placer minerals; others include monazite, platinum and ilmenite and lesser gems such as garnets.