covellite
/kəʊˈvɛlʌɪt
/noun [mass noun]
A blue mineral consisting of copper sulphide, typically occurring as a coating on other copper minerals.Generally associated minerals included other silver amalgams, covellite, and pyrite....
- Outstanding in the display is a dark blue covellite group as well as plates of quartz.
- Good crystals of covellite have not been reported from the District.
Origin
Mid 19th century: named after Nicolò Covelli (1790–1829), Italian chemist, + -ite1.