The Collaborative International Dictionary
titanic iron ore
Menaccanite \Me*nac"can*ite\, n. [From Menaccan, in Cornwall, where it was first found.] (Min.) An iron-black or steel-gray mineral, consisting chiefly of the oxides of iron and titanium. It is commonly massive, but occurs also in rhombohedral crystals. Called also titanic iron ore, and ilmenite.