Definition of tantalite in English:

tantalite

noun

  • A rare, dense, black mineral consisting of a mixed oxide of tantalum, of which it is the principal source, and iron.

    • ‘Lepidolite, beryl, tantalite, quartz crystals, and altered and unaltered petalite are some of the minerals that can be found in this district.’
    • ‘In older Glossaries there were listings following both columbite and tantalite that referred the reader to ferrocolumbite, magnocolumbite, manganocolumbite, and so on.’
    • ‘Although no spectacular or highly valuable minerals are present, the pegmatites contain minerals seldom found in Wyoming, such as petalite, beusite, lepidolite, and tantalite.’
    • ‘Coltan is a contraction of colombo tantalite, an excellent conductor that is exceptionally resistant to heat and cold and valuable as a coat for electronic components in mobile phones.’
    • ‘In the Democratic Republic of Congo miners seeking the highly prized mineral tantalite, or coltan, have been pouring waste into the Biega national park and Okapi wildlife reserve.’

Origin

Early 19th century: from tantalum + -ite.

Pronunciation

tantalite

/ˈtæn(t)lˌaɪt//ˈtan(t)lˌīt/