Tantalite Definition
 tăntə-līt 
    noun
  
 A black, orthorhombic mineral, (Fe,Mn)(Ta,Nb)2O6, that is an ore of tantalum and niobium.
 Webster's New World 
Other Word Forms of Tantalite
Noun
Singular:
 tantalitePlural:
 tantalitesOrigin of Tantalite
- tantal(um) –ite - From American Heritage Dictionary of the English Language, 5th Edition 
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