Also found in: Encyclopedia, Wikipedia.
Related to phyllite: amphibolite


A green, gray, or red metamorphic rock, similar to slate but often having a wavy surface and a distinctive micaceous luster.

phyl·lit′ic (fĭ-lĭt′ĭk) adj.
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.


(Geological Science) a compact lustrous metamorphic rock, rich in mica, derived from a shale or other clay-rich rock
[C19: from phyll(o)- + -ite1]
phyllitic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈfɪl aɪt)

a slaty rock, the cleavage planes of which have a luster imparted by minute scales of mica.
[1820–30; < Greek phýll(on) leaf + -ite1]
phyl•lit•ic (fɪˈlɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
This depth is very important because it is approximately where the graphitic phyllite horizon begins.
The foliation is the most important structure developed in this stage (Sarkarinejad et al., 2010; Sheikholeslami, 2015) The deformed Precambrian unit consists of schist, phyllite, and slate, exposed extensively in the east and south-east of the study area.
The basin is bounded by magmatic and metamorphic rocks, predominantly granite, gneiss, mica schist and phyllite. Thus, sediments in the basin mainly consist of debris of these rocks (Flechsig et al.
Yin, "Deformation and failure mechanism of phyllite under the effects of THM coupling and unloading," Journal of Mountain Science, vol.
The ore-body is chiefly composed of hematite and its surrounding rock mainly consists of dolomite, phyllite, and quartz-schist.
[17] found that the permeability of phyllite and cracked sandstone decreased with increasing temperature within a limited scope, but increased when temperature exceeded a certain value.
Highlights here include a phyllite carving of Shiva and Parvati dating to the late Pala dynasty (c.
The primal geologic formation about Longmenshan tunnel is shale, phyllite, dolomite rock, and limestone at test sections of XJ3K1 + 525 to XJ3K1 + 325.
The Triassic sediment is a conglomerate of interbedded sandstone, siltstone, and shale while the Permian counterpart contains phyllite, slate, and shale with subordinate sandstone and schist.