Definition of tennantite in English:

tennantite

noun

  • [mass noun] A grey-black mineral consisting of a sulphide of copper, iron, and arsenic. It is an important ore of copper.

    • ‘The orebody contained an exotic suite of minerals, including mercury, tennantite, and tetradymite, all of no commercial value.’
    • ‘Initially, the glassy brown crystals associated with quartz and tennantite were misidentified as anglesite.’
    • ‘In the orebody galena occurred as large masses associated with pyrite, chalcopyrite, and tennantite.’

Origin

Mid 19th century: from the name of Smithson Tennant (1761–1815), English chemist, + -ite.

Pronunciation:

tennantite

/ˈtɛnəntʌɪt/