clay mineral


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Related to clay mineral: Smectite

clay mineral

n.
Any of various hydrous silicates that have a fine crystalline structure and are components of clay.
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.

clay mineral

n
(Minerals) any of a group of minerals consisting of hydrated aluminium silicates: the major constituents of clays
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

clay′ min`eral


n.
any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays.
[1945–50]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
To study the effect of different extractants on clay mineral and soil carbonate dissolution (due to the importance of carbonates in the studied soils), the contents of Ca, Mg, Al and K extracted by Ca[Cl.sub.2], HC1, citric acid and oxalic acid solutions were determined during the short- and long-term experiments (Table 3).
Bauxite is a mixture of minerals such as gibbsite, boehmite and diaspore, iron oxides such as goethite and hematite, clay mineral kaolinite and some amounts of anatase.
Studies on acid contaminated soils indicated that dissolution of aluminosilicate of clay mineral with subsequent mineral formations leads to volume changes in soils (Sokolovich 1995; Mal'tsev 1998; Sivapullaiah et al.
The sample preparation for XRD tests of the relative clay mineral content is as follows: (1) the air-dried sample is crushed to a particle size of less than 1 mm, the crushed power is placed into the beaker, and then the sample is soaked with distilled water and dispersed by the ultrasonic treatment.
However, the potential impact of various factors (e.g., clay mineral composition, water content, grain gradation, and confining pressure) has not yet been reported.
The chemical modification of clay mineral through the use of cationic surfactant to generate organoclays [29] has applications in environmental remediation [30].
In soil mineralogy, VNIR can be used to characterize various soil mineralogic properties such as clay mineral composition, clay content, and mineral weathering/alteration degree, although quartz and feldspar have weak/nonexistent absorption in the VNIR range [22-24].
Essentially, the clay mineral can be modified in two ways: in the interlayer space in pursuance of swelling and cation exchange and on the surface due to an adsorption process.
Based on the formula, feldspar dissolution can provide the large amounts of [Al.sup.3+] and Si[O.sub.2] needed for clay mineral and authigenic quartz precipitation [15].
As a chloritic clay mineral of unusual type, corrensite in a natural system was documented from the Triassic in England (Stephen and MacEwan, 1951).
In order to determine the clay mineral associations, the XRD patterns of oriented air-dried preparations of clay fraction ([less than or equal to]2 [micro]m) were analysed.