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Qualitative and Quantitative Study of Stacking Faults in a Hydrazine Treated Kaolinite桼elationship with the Infrared Spectra
Qualitative Hydrazine Treated Kaolinite Infrared Spectra
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2012/2/13
Artificial stacking faults can be created within a well-crystallized kaolinite by intercalating and removing hydrazine. X-ray powder patterns with electron microscopy show that the created defects are...
Note on the Intercalation of Kaolinite, Dickite and Halloysite by Dimethyl-Sulfoxide
Kaolinite Dickite Halloysite Dimethyl-Sulfoxide
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2012/2/13
Various kaolinites, a dickite and halloysites have been treated by DMSO in presence of D2O and subsequently washed by D2O. This procedure allowed to record OD stretching bands which are due specifical...
Kaolinite Crystallization at Room Temperature by Homogeneous Precipitation—III: Hydrolysis of Feldspars
Kaolinite Crystallization Homogeneous Precipitation Hydrolysis of Feldspars
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2011/11/18
Abstract: The kaolinite crystallization by homogeneous precipitation with previous hydrolysis of the feldspars added has been followed by pH and potassium concentration measurements. The synthesized p...
New Approach to the Problem of the Interlayer Bonding in Kaolinite
Interlayer Kaolinite New Approach
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2012/2/13
The possibility of recording the absorption band which is related to oscillations of free OH in a superficial plane of the octahedral sheet of kaolinite inspired the present authors to review the prob...
The Nature of TiO2 in Kaolinite
Nature TiO2 Kaolinite
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2012/2/13
SEM, TEM, and electron probe studies indicate that the anatase in Georgia kaolins, and probably anatase in general, consists of subspherical particles (TiO2 pellets) 0.05?.1 祄 dia. Some pure anatase a...
Origin and Position of Exchange Sites in Kaolinite: An ESR Study
Origin Position Exchange Sites Kaolinite ESR
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2012/2/13
Electron spin resonance (ESR) spectroscopy is used to investigate the nature of exchange sites on kaolinite. ESR spectra of exchangeable Cu2+ and Mn2+ on kaolinite indicate that divalent exchange ions...
The Influence of Crystallite Size on the Apparent Basal Spacings of Kaolinite
Crystallite Size Apparent Basal Spacings Kaolinite
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2012/2/13
For very small crystallites diffraction theory shows not only broadening of powder lines, but generally also a shift of the line position, depending on the change of the structure factor over the rang...
Anatase and Rutile Determination in Kaolinite Deposits
Anatase Rutile Determination Kaolinite Deposits
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2012/2/15
Hexafluorotitanic acid (H2TiF6) selectively dissolves kaolinite and most other phyllosilicate minerals of soils and sediments, concentrating free crystalline (Ti,Fe)O2 minerals (partially substituted ...
Fabric of Consolidated Kaolinite
Fabric Consolidated Kaolinite
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2011/11/18
Abstract: Fabric refers to the spacial arrangement of clay particles in a sample relative to a reference plane. X-ray diffraction data yield an ‘amount of orientation’ (AO) that varies from zero for i...
Electron-microscopic and Mossbauer Spectroscopic Studies of Iron-Stained Kaolinite Minerals
Electron-microscopic Mossbauer Spectroscopic Iron-Stained Kaolinite Minerals
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2012/2/15
An electron-microscopic and M鰏sbauer spectroscopic study of a range of kaolinites has revealed three distinct types of iron contamination within these minerals: a) Ferric ion may substitute for alumin...
The Composition of Kaolinite桝n Electron Microscope Microprobe Study
Composition Kaolinite Electron Microscope Microprobe Study
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2012/2/14
Electron microscope microprobe analysis (EMMA) has been applied to the determination of the elemental compositions of the kaolinite particles (Mg, Al, Si, K, Ti and Fe) contained in the 0? ?0? 祄 e.s.d...
Kaolinite Synthesis: The Role of the Si/Al and (Alkali)/(H +) Ratio in Hydrothermal Systems
Kaolinite Synthesis Hydrothermal Systems Ratio
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2012/2/14
The Si/Al ratio of an hydrothermal system plays an important role in kaolinite synthesis. If the atomic Si/Al ratio of a system is greater than 2·0, kaolinite will disappear at 345 ± 5°C and 2 kbars w...
OD-Interpretation of Kaolinite-Type Structures—II: The Regular Polytypes (MDO-Polytypes) and their Derivation
Kaolinite-Type Structures OD-Interpretation MDO-Polytypes
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2012/2/14
All MDO-polytypes (i.e. regular polytypes) of trioctahedral, dioctahedral and monoctahedral 1:1 phyllosilicates are derived from their OD-character using the results of our preceding paper. The terms ...
Od-Interpretation of Kaolinite-Type Structures—I: Symmetry of Kaolinite Packets and their Stacking Possibilities
Kaolinite-Type Structures Kaolinite Packets
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2012/2/14
The idealized symmetry of kaolinite-type minerals (1:1 phyllosilicates) is analysed in detail. They can be considered as OD-structures consisting of three kinds of OD-layers. Each of them, taken separ...
Micaceous Occlusions in Kaolinite Observed by Ultramicrotomy and High Resolution Electron Microscopy
Micaceous Occlusions Kaolinite Ultramicrotomy Resolution Electron Microscopy
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2012/2/13
The layer structure of kaolinite from Twiggs, Georgia and fire-clay type kaolinite (Frantex B, from France), particle size separates 2–0·2 µm was studied by high resolution electron microscopy a...