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A dark-green to black pyroxene mineral, (Ca,Na)(Mg,Fe,Al)(Si,Al)2O6, that contains large amounts of aluminum, iron, and magnesium.
[Latin augītis, a precious stone, from Greek augītēs, from augē, brightness.]
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.
(Minerals) a black or greenish-black mineral of the pyroxene group, found in igneous rocks. Composition: calcium magnesium iron aluminium silicate. General formula: (Ca,Mg,Fe,Al)(Si,Al)2O6. Crystal structure: monoclinic
[C19: from Latin augītēs, from Greek, from augē brightness]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a silicate mineral, chiefly of calcium, magnesium, iron, and aluminum: a dark green to black variety of monoclinic pyroxene, characteristic of basic rocks.
[1780–90; < Latin augītis a kind of precious stone]
au•git•ic (ɔˈdʒɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||augite - dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum and iron and magnesium|
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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