tennantite


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tennantite

[′ten·ən‚tīt]
(mineralogy)
(Cu,Fe)12 As4S13 A lead-gray mineral crystallizing in the isometric system; it is isomorphous with tetrahedrite; an important ore of copper.
References in periodicals archive ?
When the formula amount of As exceeds Sb, the mineral is called tennantite.
The massive sulphide mineralisation comprises the copper minerals luzonite, tennantite, bornite and minor chalcopyrite and, unusual for Chelopech, abundant visible gold.
Most drill holes encountered strong sulphide mineralization, +/- 30% fine-grained pyrite with traces of tennantite in strongly silicified or argillically altered intermediate volcanics.