noun. a weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium.
1. Adjective 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.