Results 1 to 10 of about 839 (177)
CHEMICAL COMPOSITION OF DIOCTAHEDRAL TWO-LAYER CLAY MINERALS
Gruntovedenie, 2021 The article shows that the variations in the chemical composition of kaolinite recorded during the analytical determination of individual oxides may be due to different reasons Among them, the following should be noted: isomorphic substitutions, crystal structure features and adsorption of amorphous oxides and hydroxides of silicon, aluminum, iron ...
E.N. Samarin
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Multiscale analysis and experimental validation of the effective elastic modulus of epoxy-dioctahedral phyllosilicate clay composite [PDF]
Heliyon, 2020 In this research, developed finite element codes were used to study the effective elastic modulus and stress-strain distribution profiles of epoxy resin filled with 6 wt. % microparticles of kaolinite.
O.O. Daramola +6 more
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Thermal rearrangements for dioctahedral smectite.
Journal of the Mineralogical Society of Japan, 1990 Structural rearrangements for dioctahedral smectite after thermal treatment were investigated. The notable structural changes accompanying removal of interlayer water are contraction of basal spacing, migration of interlayer cation into silicate layer and expansion of b-parameter.
Motoharu KAWANO, Katsutoshi Tomita
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Hydrothermal behaviors of dioctahedral smectites.
Journal of the Mineralogical Society of Japan, 1990 Three montmorillonites from Tsukinuno, Odo, Mikawa and one beidellite from Sano saturated with various cations (Li, Na, Rb, Cs, Mg, Ca, Sr, Ba, Ni, Co) were treated under hydrothermal conditions. Smectites changed to mica, chlorite and some non-sheet silicates through interstratified mineral phases.
Toshihiko Matsuda +3 more
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Tobelite, a new ammonium dioctahedral mica.
Mineralogical Journal, 1982 Mineralogical properties of tobelite, a new ammonium-dominant dioctahedral mica, found in the Ohgidani pottery stone deposit at Tobe, Ehime Prefecture, Japan, are described.This mineral, accompanied by quartz, occurs as a hydrothermal alteration product of a biotite andesite dyke. Wet chemical analysis gives a structural formula: ((NH4)0.53K0.19Na0.01
Shoji Higashi
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How the Solid/Liquid Ratio Affects the Cation Exchange Process and Porosity in the Case of Dioctahedral Smectite: Structural Analysis? [PDF]
Adsorption Science & Technology, 2021 The performance of a clay mineral geomembrane used in the context of a geological barrier for industrial and radioactive waste confinement must pass through the understanding of its hydrous response as well as the limits of the cation exchange process ...
Chadha Mejri +2 more
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Protolysis Reaction on Pyrophyllite Surface Molecular Models: A DFT Study [PDF]
MoleculesUnderstanding the mechanisms of mineral dissolution at the atomic scale is crucial for interpreting geochemical processes in soils and sediments, particularly those involving clay minerals.
María Bentabol +3 more
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Evolution of Dioctahedral Vermiculite in Geological Environments—An Experimental Approach
Clays and Clay Minerals, 2013 AbstractDioctahedral vermiculite commonly occurs in soils and fresh sediments, but has not been reported in sedimentary rocks. Little is known of the evolution of this mineral during diagenesis. According to the available literature, dioctahedral vermiculite is likely to exhibit strong potential for selective sorption and fixation of K+ involving ...
Michał Skiba
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High resolution electron microscopy of dioctahedral mica
Mineralogical Journal, 1978 Two dimensional lattice images of dioctahedral mica with the projection along a1M, [110]2M or a3T-axes were obtained for wedge shaped non-curled edges of sericite crystals. Stacking sequences representing 1M, 2M and 3T polytypes are observed within a small area of the crystal.
Shinji Tomura +2 more
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Applied Surface Science Advances, 2023 The intrinsic cation exchange capacity (CEC) of clays is a crucial characteristic that offers a tool to assess their overall chemical properties. For the confinement of industrial and radioactive waste, clays are deployed as geological barriers, hence it
Chadha Mejri +2 more
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