| The lake may have dried up or nearly dried up periodically, producing outward concentric zones of albite, analcime, clinoptilolite, and smectite. |
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| In the presence of kaolinite and illite, aggregate sizes were smaller and sinking rates lower than in the presence of smectite and quartz. |
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| Clay minerals are mainly illite and chlorite, with only traces of smectite, vermiculite and kaolinite. |
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| The other two silicates are possibly an amphibole and a member of the smectite group. |
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| The Lafayette meteorite contains abundant iddingsite, a fine-grained intergrowth of smectite clay, ferrihydrite, and ionic salt minerals. |
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| The limestone-dolomite breccia is characterized by abundant palygorskite, minor sepiolite, rare kaolinite and near absence of smectite. |
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| The clay is composed of illite and kaolinite, with minor amounts of chlorite and smectite. |
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| Although type 1 Mg-smectite may be derived from tektitcs, or volcanic glass, there is strong evidence that the smectite spherules are of tektite origin. |
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| The clay mineral smectite, with physical properties that make it unsuitable as a soil if it is wet, is only found in major amounts in covered stadiums. |
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| Common clays are usually mixtures of clay minerals such as illite, smectite, and kaolinite, together with fine silica and other minor constituents. |
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| In most sedimentary rocks, mica, feldspar and less stable minerals have been reduced to clay minerals like kaolinite, illite or smectite. |
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| The transformation of smectite to illite produces silica, sodium, calcium, magnesium, iron and water. |
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| Clay is a natural mineral of the smectite family of phyllosilicate group shaped crystals with a layered structure. |
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| For example, Zeolite was dominated by heulandite, with lesser amounts of quartz and smectite. |
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| As reported by those authors, interstratification accounts for the high CEC of basalt-derived soils containing smectite in southern Brazil. |
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| Clay components include chlorite, iolite, kaolinite and smectite. |
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| Lacking in Al-polymers in the interlayer region, vermiculite and smectite display a greater expandability and contractibility than their hydroxy-interlayered counterparts. |
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| Microbial Reduction of Fe in Smectite Minerals by Thermophilic Methanogen Methanothermobacter thermautotrophicus. |
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| Smectite to illite diagenesis in early Miocene sediments from the hyperthermal western Pannonian Basin. |
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