ilmenite

noun

Etymology: Named after Ilmen Mountains in Russia + -ite in 1827.

1. A weakly magnetic dark gray mineral found in metamorphic and igneous rocks; it is a mixed oxide of iron and titanium, FeTiO₃

   “The basalt of Goose Island of the Ice Harbor Member is unique for the occurrence of microphenocrysts of ilmenite and titanmagnetite.”