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Related to covellite: Enargite
A lustrous indigo-blue mineral, CuS, an important ore of copper.
[After Nicolò Covelli (1790-1829), Italian mineralogist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an indigo-blue copper sulphide ore, often referred to as blue copper or indigo copper
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
co•vel•lite(koʊˈvɛl aɪt, ˈkoʊ vəˌlaɪt)
a mineral, copper sulfide, CuS, indigo in color and usu. occurring as a massive coating on other copper minerals.
[1840–50; after NicolòCovelli (1790–1829), Italian mineralogist who found it; see -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.