enargite

noun
en·​ar·​gite | \ ə̇ˈnärˌjīt, ˈenər-\
plural -s

Definition of enargite

: a grayish black or iron-black copper arsenic sulfide (Cu3AsS4) of metallic luster occurring in small orthorhombic crystals or massive and often containing antimony

History and Etymology for enargite

German enargit, from Greek enargēs visible (from en in + argēs bright) + German -it -ite; from its cleavage; akin to Greek argos white

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