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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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Copper minerals are atacamite and brochantite in the oxide zone; chalcocite, covellite, and pyrite in the enriched zone; and chalcopyrite, bornite, molybdenite, tennantite, and pyrite in the hypogene zone.
Economic Geology Models 1. Geochemical exploration and metallogenic ... by Cameron, Eion M.; Leybourne, Matthew I.; Palacios, Carlos; Reich, Martin / Geoscience Canada
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
 
 
 
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