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tantalite

[tan-tl-ahyt] /ˈtæn tlˌaɪt/
noun
1.
a black, crystalline mineral, iron tantalate, (Fe, Mn) Ta 2 O 6 , 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
1795-1805
First recorded in 1795-1805; tantal(um) + -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for tantalite

tantalite

/ˈtæntəˌlaɪt/
noun
1.
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
Word Origin
C19: from tantalum + -ite1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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