covellite

co vel lite |kōˈvelˌīt, ˈkōvəˌlīt koʊˈvɛlaɪt | ▶noun a blue mineral consisting of copper sulfide, typically occurring as a coating on other copper minerals. ORIGIN mid 19th cent.: named after Nicolò Covelli (1790 –1829 ), Italian chemist, + -ite 1 .

covellite

covellite |kəʊˈvɛlʌɪt | ▶noun [ mass noun ] a blue mineral consisting of copper sulphide, typically occurring as a coating on other copper minerals. ORIGIN mid 19th cent.: named after Nicolò Covelli (1790 –1829 ), Italian chemist, + -ite 1 .