covellite

noun
co·​vel·​lite | \kō-ˈve-ˌlīt, ˈkō-və-\
variants: or less commonly covelline \ kō-​ˈve-​ˌlēn , ˈkō-​və-​ \

Definition of covellite 

: a usually blue mineral consisting of a sulfide of copper

First Known Use of covellite

1850, in the meaning defined above

History and Etymology for covellite

French covelline, from Niccolò Covelli †1829 Italian chemist

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The first known use of covellite was in 1850

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