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Related to tantalites: Tantalum Ore


A black to red-brown mineral, (Fe,Mn)(Ta,Nb)2O6, distinguished from columbite by the predominance of tantalum over niobium and used as an ore of both elements.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) 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)2O6
[C19: from tantalum + -ite1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈtæn tlˌaɪt)

a black, crystalline mineral, iron-manganese tantalate, (Fe, Mn)Ta2O6, the principal ore of tantalum.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tantalite - a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum
atomic number 73, Ta, tantalum - a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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References in periodicals archive ?
Really they should be called columbo-tantalites but are named columbite or tantalite according to the predominant element.
The residues were washed, checked over for gems, crushed and passed over shaking tables where microlite (another tantalum mineral of very high value), tantalite and bismutite were recovered.
I remember some geologists who, even after they had visited the mines and seen what they were producing, insisted on telling me that only Brazil could be considered as a serious producer of beryl, columbite and tantalite. From a few to whom I tried to convey the idea of the enormous potential of the field, I received looks of disbelief and veiled remarks about the dangers of being in the bush too long!