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Related to pyrophyllite: talc
A silvery white or pale green aluminum silicate mineral, Al2Si4O10(OH)2, occurring naturally in soft compact masses.
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 white, silvery, or green micaceous mineral that consists of hydrated aluminium silicate in monoclinic crystalline form and occurs in metamorphic rocks. Formula: Al2Si4O10(OH)2
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
py•ro•phyl•lite(ˌpaɪ rəˈfɪl aɪt, paɪˈrɒf əˌlaɪt)
a mineral, hydrous aluminum silicate, Al2Si4O10(OH)2, usu. having a white or greenish color and occurring in foliated and granular masses.
[1820–30; < German Pyrophyllit; so called because it exfoliates when heated. See pyro-, -phyll, -ite1]
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.||pyrophyllite - a white or greenish aluminum silicate mineral (resembles talc)|
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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