- a black, crystalline mineral, iron tantalate, (Fe, Mn) Ta2O6, the principal ore of tantalum and an end member of a series of solid solutions in which manganese and niobium combine to form columbite.
Origin of tantalite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for tantalite
It is a constituent of certain rare minerals, such as tantalite.A Textbook of Assaying: For the Use of Those Connected with Mines.
Cornelius Beringer and John Jacob Beringer
- a heavy brownish mineral consisting of a tantalum oxide of iron and manganese in orthorhombic crystalline form: it occurs in coarse granite, often with columbite, and is an ore of tantalum. Formula: (Fe,Mn)(Ta,Nb) 2 O 6
C19: from tantalum + -ite 1