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[te-truh-hee-drahyt] /ˌtɛ trəˈhi draɪt/
a steel-gray or blackish mineral with a brilliant metallic luster, essentially copper and antimony sulfide, (Cu, Fe, Zn, Ag,) 12 Sb 4 S 13 , an end member of a series of solid solutions into which arsenic enters to form tennantite: mined as an ore of copper and silver.
1865-70; tetrahedr(on) + -ite1, modeled on German Tetraedrit Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for tetrahedrite
  • Less commonly of primary origin, disseminated in galena or tetrahedrite.
  • Argentiferous tetrahedrite is also abundant with a generally high silver content.
  • Silver was also produced from ores including tetrahedrite, stephanite, and pyrargyrite.
  • Also present are veins along aplitic intrusions containing argentiferous galena and tetrahedrite with bornite.
  • These deposits only rarely contain cinnabar or tetrahedrite.
  • The three main ore-bearing minerals are argentiferous galena, sphalerite, and argentiferous tetrahedrite.
  • Ores were primarily partially oxidized galena, pyrite and tetrahedrite.
  • The silver-bearing phase is uncertain, but tetrahedrite has been reported from the property.
British Dictionary definitions for tetrahedrite


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 & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for tetrahedrite

common sulfosalt mineral, an antimony sulfide of copper, iron, zinc, and silver [(Cu,Fe,Zn,Ag)12Sb4S13], that is an important ore of copper and sometimes of silver. It forms gray to black metallic crystals or masses in metalliferous hydrothermal veins. Tetrahedrite forms a solid solution series with the similar mineral tennantite, in which arsenic replaces antimony in the molecular structure. It is found in important quantities in Switzerland, Germany, Romania, the Czech Republic, France, Peru, and Chile, and both minerals occur in large amounts in Colorado, Idaho, and other localities in the western United States. For detailed physical properties, see sulfosalt (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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