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Interrelated Features of Structure and Stacking of Kaolin Mineral Layers
Dickite Halloysite Kaolinite Polytypism Stacking faults
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2011/12/23
Abstract: Layer stackings in the ideal and real kaolinite structures are considered in terms of layer orientations i = 1, 2, ˇ 6, intra- and interlayer displacements of adjacent 0- and T-sheets, si an...
Effects of Iron and Aluminium Oxides on the Colloidal and Surface Properties of Kaolin
Aluminium oxides Colloidal stability Iron oxides Kaolinite PZC
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2011/12/28
The association between clay silicates, and iron and aluminium oxides has a major influence on the chemical and physical properties of soils. In this work the interaction of a kaolin substrate with ir...
Boxwork Fabric of Halloysite-Rich Kaolin Formed by Weathering of Anorthosite in the Sancheong Area, Korea
Anorthosite Boxwork fabric Halloysite Kaolin Scanning electron microscopy Transmission electron microscopy
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2011/12/1
Abstract: Boxwork fabric in which numerous thin or thick halloysite wails are interconnected into a microscopically porous cellular pattern is widely developed in the halloysite-rich kaolin formed by ...
Sampling and Analysis of Kga-1B Well-Crystallized Kaolin Source Clay
Georgia Kaolin Kaolinite Source clay Well crystallized
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2011/12/30
Additional well-crystallized kaolin from Washington County, Georgia, has been supplied to the Clay Minerals Society Source Clay Repository to replace the exhausted supply of KGa-1. This kaolin is call...
Influence of Calcium and Sodium Concentration on the Microstructure of Bentonite and Kaolin
Aggregation Bentonite Electrolyte Flocculation Kaolin Scanning electron microscopy
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2012/1/5
The influence of added sodium and calcium nitrate electrolyte on the particle aggregates in the colloid fraction of natural bentonite and kaolin was studied. Clays were flocculated in distilled water ...
Stacking Faults in Kaolin-Group Minerals in the Light of Real Structural Features
Defect structures Dickite Kaolinite Stacking faults X-ray powder diffraction
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2012/1/5
A comparison of the structural characteristics of the kaolin-group minerals, mainly kaolinite and dickite, shows that they differ in both the two-dimensional periodicity in the 1:1 layers and the rota...
Stacking Faults in the Kaolin-Group Minerals: Defect Structures of Kaolinite
Crystallinity Defect structure Hinckley index Kaolinite Stacking faults X-ray powder diffraction
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2012/1/5
Previous studies of the defect structure of kaolinite have examined samples having a restricted level of defects. This study examined nine kaolinite samples having a large diversity of defect contents...
Reexamination of the Kinetics of the Thermal Desorption of Dimethylsulfoxide and N-Methyl Formamide From a Greensplatt Kaolin
Activation energy Desorption Dimethylsulfoxide Kaolinite N-methyl formamide Thermal treatment
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2011/11/28
Abstract: The kinetics of the thermal decomposition of the kaolin: dimethylsulfoxide (kaolin: DMSO) and the kaolin: N-methylformamide (kaolin: NMF) intercalates have been reexamined. Two different sam...
Near-Infrared Reflectance Spectra of Mixtures of Kaolin-Group Minerals: Use in Clay Mineral Studies
Dickite Interstratification Kaolinite Near-infrared spectroscopy Order-disorder X-ray powder diffraction
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2012/1/9
Near-infrared (NIR) reflectance spectra for mixtures of ordered kaolinite and ordered dickite have been found to simulate the spectral response of disordered kaolinite. The amount of octahedral vacanc...
Compositional and Structural Variations in the Size Fractions of a Sedimentary and a Hydrothermal Kaolin
Dickite Halloysite Infrared spectroscopy Kaolinite Particle size Thermal analysis Scanning electron microscopy X-ray powder diffraction
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2012/1/11
The 16-8-, 8-5-, 5-2-, 2-1-, 1-0.5-, 0.5-0.3-, 0.3-0.1-, and <0.1-祄 size fractions were centrifuged from a Georgia (U.S.A.) sedimentary kaolin and a hydrothermal kaolin from the Sasso mine (Italy) and...
Nature and Utility of Hexamethylenediamine-Produced Kaolin Floc Structure
Flocculation Hexamethylenediamine Kaolin Muscovite Paper Rheology
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2011/11/25
Abstract: Kaolin floc structures of commercial utility are produced by adsorption of hexamethylenediamine. These flocs are largely face-to-face structures with small diameter platelets of colloidal ka...
Effect of Ambient Atmosphere on Solid State Reaction of Kaolin-salt Mixtures
Infrared spectroscopy Gaseous atmosphere Kaolin Metakaolin Salt Thermal analysis
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2012/1/12
The reaction of kaolin with NaCl was followed by dynamic thermal analysis and mass spectrometry under N2, CO2, and air atmospheres and in a 10−5-torr vacuum. The weight loss was a function of th...
Room-Temperature Luminescence from Kaolin Induced by Organic Amines
Amine Hydrazine Kaolin Luminescence
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2011/11/25
Abstract: Several new, room-temperature luminescent phenomena, resulting from the interaction of kaolin and various amino compounds, have been observed. The emission of light from kaolin pastes (treat...
Mossbauer Effect Studies of Iron in Kaolin. II. Surface Iron
Beneficiation Iron Kaolin Mossbauer effect Surface
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2012/2/7
57Fe M鰏sbauer spectra have been used to interpret the effects of different cleaning processes on the iron mineralogy of a Weipa, Australia, kaolin. A magnetically separated fraction contained 28% of i...
Mossbauer Effect Studies of Iron in Kaolin. I. Structural Iron
Iron Kaolinite Mossbauer effect Paramagnetism Structural substitution
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2012/2/7
57Fe M鰏sbauer spectra of a cleaned Weipa, Australia, kaolin showed that a considerable fraction of the structural iron exhibits paramagnetic relaxation between 4癒 and 300癒 the first time that this has...