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covellite

[koh-vel-ahyt, koh-vuh-lahyt] /koʊˈvɛl aɪt, ˈkoʊ vəˌlaɪt/
noun
1.
a mineral, copper sulfide, CuS, indigo in color and usually occurring as a massive coating on other copper minerals.
Origin of covellite
1840-1850
1840-50; named after Nicolò Covelli (1790-1829), Italian mineralogist who found it; see -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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