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tantalite
(redirected from Tantulum)

    Also found in: Encyclopedia, Wikipedia 0.01 sec.
tan·ta·lite  (tnt-lt)
n.
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.
[tantal(um) + -ite.]
tantalite [ˈtæntəˌlaɪt]
n
(Earth Sciences / 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,N6)2O6
[from tantalum + -ite1]
ThesaurusLegend:  Synonyms Related Words Antonyms
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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By now suspecting they were seeing positrons from some unexpected source, the experimenters tried thorium against tantulum to produce a supernucleus with charge 163, well below the theoretical threshold for producing positrons from the vacuum.
Positrons, electrons form supernuclei by Thomsen, Dietrick E. / Science News
 
 
 
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