a mineral, copper sulfide, CuS, indigo in color and usually occurring as a massive coating on other copper minerals.
Origin of covellite
1840–50; named after Nicolò Covelli (1790–1829), Italian mineralogist who found it; see -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for covellite
Historical Examples of covellite
Copper-glance readily alters to other minerals, such as malachite, covellite, melaconite and chalcopyrite.