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phyllite

[fil-ahyt] /ˈfɪl aɪt/
noun
1.
a slaty rock, the cleavage planes of which have a luster imparted by minute scales of mica.
Origin
1820-1830
1820-30; phyll- + -ite1
Related forms
phyllitic
[fi-lit-ik] /fɪˈlɪt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for phyllite
  • Light-gray to light-tan marble, phyllite, and calcareous phyllite.
  • If slate minerals further recrystallize, giving the rocks a shiny appearance, the new rock is phyllite.
  • It consists of gray-green phyllite, sandy phyllite, and slate.
British Dictionary definitions for phyllite

phyllite

/ˈfɪlaɪt/
noun
1.
a compact lustrous metamorphic rock, rich in mica, derived from a shale or other clay-rich rock
Derived Forms
phyllitic (fɪˈlɪtɪk) adjective
Word Origin
C19: from phyll(o)- + -ite1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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phyllite in Science
phyllite
  (fĭl'īt')   
A green, gray, or red metamorphic rock, similar to slate but often having a wavy surface and a distinctive luster imparted by the presence of mica.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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