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tetrahedrite

[ te-truh-hee-drahyt ]

noun

  1. 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.


tetrahedrite

/ ˌtɛtrəˈhiːdraɪt /

noun

  1. 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) 12 Sb 4 S 13
“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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Word History and Origins

Origin of tetrahedrite1

1865–70; tetrahedr(on) + -ite 1, modeled on German Tetraedrit
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Example Sentences

In external form these crystals are cubic with inclined hemihedrism, the symmetry being the same as in blende and tetrahedrite.

Tetrahedrite, blende, diamond, boracite and pharmacosiderite are substances which crystallize in this class.

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