[ ih-troh-tan-tl-ahyt ]
/ ˌɪ troʊˈtæn tlˌaɪt /
a mineral, tantalite and niobate of yttrium and various elements, as iron, and cerium, occurring in the form of brown-black crystals.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for yttrotantalite
It is also called Tantalium from the mineral tantalite and yttrotantalite, found in Sweden.A Dictionary of Arts, Manufactures and Mines|Andrew Ure