Meaning of yttrotantalite

yt•tro•tan•ta•lite

Pronunciation: (i"trō-tan'tl-īt"), [key]
— n.
  1. a mineral, tantalite and niobate of yttrium and various elements, as iron, and cerium, occurring in the form of brown-black crystals.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.