Hypertext Webster Gateway: "Covelline"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Covelline \Co*vel"line\ (k?-v?l"l?n), Covellite \Co*vel"lite\
(-l?t), n. [After Covelli, the discoverer.] (Min.)
A native sulphide of copper, occuring in masses of a dark
blue color; -- hence called {indigo copper}.
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