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
tetrahedrite in American English
(ˌtɛtrəˈhiˌdraɪt)
noun
a gray to black, semihard, cubic mineral, copper iron antimony sulfide, (Cu,Fe)12Sb4S13, that is a main ore of copper
Word origin
Ger tetraëdrit < LGr tetraedros (see tetrahedron) + -it, -ite1