: a black or gray lustrous metallic mineral that consists of a sulfide of copper and is an important copper ore
Examples of chalcocite in a Sentence
Recent Examples on the WebMaterials like the copper ore mineral chalcocite and fool's gold, pyrite, are sulfidic anions.
David Grossman, Popular Mechanics, 9 Apr. 2018
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chalcocite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.