noun Etymology: alteration of chalcosine, from French, irregular from Greek chalkos Date: 1868 a black or gray lustrous metallic mineral that consists of a sulfide of copper and is an important copper ore
CHALCOCITE
Meaning of CHALCOCITE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012