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tennantite

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tennantite [′ten·ən‚tīt]
(mineralogy)
(Cu,Fe)12As4S13A lead-gray mineral crystallizing in the isometric system; it is isomorphous with tetrahedrite; an important ore of copper.


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When the formula amount of As exceeds Sb, the mineral is called tennantite.
Great mining camps of Canada 1. The history and geology of the Keno ... by Cathro, R.J. / Geoscience Canada
The massive sulphide mineralisation comprises the copper minerals luzonite, tennantite, bornite and minor chalcopyrite and, unusual for Chelopech, abundant visible gold.
Dundee Precious Metals Inc.: Drilling Intercepts High Grade Zone At ... by Business Wire
Most drill holes encountered strong sulphide mineralization, +/- 30% fine-grained pyrite with traces of tennantite in strongly silicified or argillically altered intermediate volcanics.
Mena Resources Inc.: Drilling Commences at Trinidad Project in ... by Business Wire
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