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A diverse group of very fine grained clay minerals. Two main varieties are sodium rich and calcium rich. They have very different plasticities (and therefore drying shrinkages) and reactions to water (i.e. permeability). Ca-montmorillonite absorbs much less water than Na-montmorillonite. Hybrid interlayered varieties are also common.
Out Bound Links
XML for Import into INSIGHT
<?xml version="1.0" encoding="UTF-8"?>
<material name="Monmorillonite" descrip="" searchkey="" loi="0.00" casnumber="">
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