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covellite

[koh-vel-ahyt, koh-vuh-lahyt]
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noun
  1. a mineral, copper sulfide, CuS, indigo in color and usually occurring as a massive coating on other copper minerals.
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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. 2018

Examples from the Web for covellite

Historical Examples

  • Copper-glance readily alters to other minerals, such as malachite, covellite, melaconite and chalcopyrite.

    Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3

    Various