1 definition found From The Collaborative International Dictionary of English v.0.48 [gcide]: Tetrahedrite \Tet`ra*he"drite\, n. [So called because the crystals of the species are commonly tetrahedrons.] (Min.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also {gray copper ore}, {fahlore}, and {panabase}. [1913 Webster]
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