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A metamorphic rock, intermediate between shale and slate, that does not possess true slaty cleavage.

[Latin argilla, argil; see argil + -ite.]
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) any argillaceous rock, esp a hardened mudstone
[C18: from Latin argilla clay (from Greek argillos) + -ite1]
argillitic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɑr dʒəˌlaɪt)

any compact sedimentary rock composed mainly of clay materials; clay stone.
[1785–95; < Latin argill(a) clay (< Greek árgillos, derivative of argós white) + -ite1]
ar`gil•lit′ic (-ˈlɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.argillite - a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages
sedimentary rock - rock formed from consolidated clay sediments
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Host rocks include Jurassic-Cretaceous meta-sedimentary rock units including argillite, shale, quartzite, limestone, quartz pebble conglomerate and andesite.
The 26 meter gold-arsenic zone, contained within an argillite, phyllite and claystone, is indicative of a mineralized cap with a deeper, concealed, Carlin Style target that mineralized the cap through "leakage" structures.
Rich reserves of natural resources of Turkmenistan make it possible to increase the production of expanded clay, the main component for which is argillite extracted at the Yagman deposit in the Balkan region.
The gallery includes Totem Hall, Nisga'a: People of the Nass River, Jonathan Hunt House, Haida Argillite Carving, and Archaeolgy.
Unit Gh-1--2.0 m of dark grey, bedded argillaceous limestone with uneven bedding surfaces and numerous argillite intercalations 0.15-0.35 m thick.
Thermal processing of dictyonema argillite and kukersite oil shale: Transformation and distribution of sulfur compounds in pilot-scale Galoter process.
The First Peoples gallery includes a totem hall and ceremonial house, an interactive language display and a collection of Argillite (black shale) carvings from Haida Gwaii, while the Old Town recreates period streetscapes and trades -- a cannery, hotel, sawmill -- even the 1790s ship quarters of George Vancouver.
Lebon, "Permeability of macro-cracked argillite under confinement: gas and water testing," Physics and Chemistry of the Earth, Parts A/B/C, vol.
[18] analyzed deformation mechanisms induced by desiccation in Tournemire argillite specimens with a height of 200 mm and a diameter of 78 mm using the DICM.
The floor of the roadway consisted of 10.5 m argillite, and roof has been presented with competent 11 m sandstone overlain with a coal seam which has been extracted with a longwall face (Fig.
Su, "Thermodynamics modelling of plasticity and damage of argillite," Comptes Rendus Mecanique, vol.