enargite

American

[en-ahr-jahyt, en-er-jahyt] / ɛnˈɑr dʒaɪt, ˈɛn ərˌdʒaɪt /

noun

a mineral, copper arsenic and sulfide, Cu 3 AsS 4 , occurring in the form of black orthorhombic crystals having perfect cleavage: an important source of copper.

1850–55; < Greek enarg ( ḗs ) brilliant ( en- en- ² + -argēs, akin to argós bright, árgyros silver) + -ite ¹

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023