co·vel·lite \kōˈveˌlīt, ˈkōvəˌ-\noun alsoco·vel·line\-ˌlēn\ (-s) Etymology:covellite from covelline + -ite; covelline from French, from Niccolò Covelli died 1829 Italian chemist who discovered it + French -ine : a native copper sulfide CuS — called also indigo copper