A grey-black mineral consisting of a sulphide of copper, iron, and arsenic. It is an important ore of copper.‘In the orebody galena occurred as large masses associated with pyrite, chalcopyrite, and tennantite.’
- ‘Initially, the glassy brown crystals associated with quartz and tennantite were misidentified as anglesite.’
- ‘The orebody contained an exotic suite of minerals, including mercury, tennantite, and tetradymite, all of no commercial value.’
Mid 19th century from the name of Smithson Tennant (1761–1815), English chemist, + -ite.
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