单词 | tetrahedrite |
释义 | tet·ra·he·drite ![]() n. 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.] |
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