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Related to tetrahedrite: Tennantite
A grayish-black mineral, essentially (CuFe)12Sb4S13, often containing other elements, and used as an ore of copper.
[German Tetraëdrit, from Greek tetraedros, four-faced (from its four-faced crystals); see tetrahedron.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Minerals) a grey metallic mineral consisting of a sulphide of copper, iron, and antimony, often in the form of tetrahedral crystals: it is a source of copper. Formula: (Cu,Fe)12Sb4S13
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
tet•ra•he•drite(ˌtɛ trəˈhi draɪt)
1. any of a group of copper and silver ore minerals ranging from copper-iron antimony sulfide to copper-iron arsenic sulfide; copper is the chief metal but other metals (Fe, Zn, Ag) substitute for it extensively.
2. the copper-iron antimony sulfide, (Cu, Fe)12 Sb4S13, end member of the group.
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