CHALCOCITE
chalcocite, copper glance
(noun) a heavy grey mineral that is an ore of copper
Source: WordNet® 3.1
Noun
chalcocite (countable and uncountable, plural chalcocites)
(mineral) Cuprous sulfide, Cu2S, an important ore of copper.
Anagrams
• catecholic
Source: Wiktionary
Chal"co*cite, n. Etym: [Gr. (Min.)
Definition: Native copper sulphide, called also copper glance, and vitreous
copper; a mineral of a black color and metallic luster. [Formerly
written chalcosine.]
Source: Webster’s Unabridged Dictionary 1913 Edition