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Characterization of Untreated and Alkylammonium Ion Exchanged Illite/Smectite by High Resolution Transmission Electron Microscopy
Alkylammonium Clays Diagenesis Illite Interstratification Smectite Transmission Electron Microscopy
2011/12/28
High resolution transmission electron microscopy (HRTEM) have been performed on dispersed portions of one R > 1 and two R3 illite/smectite (I/S) samples from Silurian K-bentonites. R > 1 sample was st...
Charge Heterogeneity and Nanostructure of 2:1 Layer Silicates by High-Resolution Transmission Electron Microscopy
Charge heterogeneity Clays High-resolution transmission electron microscopy Illite Montmorillonite Nanostructure Smectite Vermiculite
2011/12/30
Several soil and reference smectites and vermiculites and one reference illite were examined by high-resolution transmission electron microscopy (HRTEM) to decipher the nanostructure and layer charge ...
High-Resolution Transmission Electron Microscopy Study of Mn-Oxyhydroxide Transformations and Accompanying Phases in a Lateritic Profile of Moanda, Gabon
Energy-dispersive X-ray analysis Hausmannite High-resolution transmission electron microscopy Laterite Manganese Manganite Pyrolusite Topotactic transformation
2011/12/31
Unheated natural mixtures of manganite and secondary pyrolusite, from the same lateritic manganiferous sequence, were studied in different orientations by high-resolution transmission electron microsc...
High-Resolution Transmission Electron Microscopy and Electron Diffraction of Mixed-Layer Illite/Smectite: Experimental Results
Electron diffraction Fundamental particle High-resolution transmission electron microscopy Illite/smectite Interstratification Smectite
2011/11/30
Abstract: High-resolution transmission electron microscopy (HRTEM) and electron diffraction experiments have been performed on R1 and R> 1 illite/smectite (I/S) samples that from X-ray powder diffract...
High-Resolution Transmission Electron Microscopy of Mixed-Layer Illite/Smectite: Computer Simulations
High-resolution transmission electron microscopy Illite Image simulation Mixed layer Smectite
2011/11/30
Abstract: High-resolution transmission electron microscope images of dioctahedral mixed-layer clay structures (illite/smectite) having various substitutional and polytypic schemes were modeled using c...
“Chloritized” Vermiculite in a Korean Ultisol Studied by Ultramicrotomy and Transmission Electron Microscopy
Chloritized vermiculite Stacking arrangement Transmission electron microscopy Ultramicrotomy Vermiculite
2012/1/5
“Chloritized” vermiculite coexisting with kaolin-group minerals, vermiculite, mica, and gibbsite in the 0.2–0.5-µm fraction separated from a Korean Ultisol was studied by ultramicrotomy and high...
Analytical Electron Microscopy and the Problem of Potassium Diffusion
Adularia Analytical electron microscopy Diffusion Muscovite Potassium Transmission electron microscopy
2012/1/10
Diffusion of K during analytical electron microscopy (AEM) results in anomalously low count rates for this element. As the analysis area and specimen thickness decrease, count rates become disproporti...
Investigation of a K-Bentonite by X-ray Powder Diffraction and Analytical Transmission Electron Microscopy
Analytical transmission electron microscopy Bentonite Illite Interstratification Potassium Selected area diffraction Smectite X-ray powder diffraction
2011/11/30
Abstract: The < 0.1-µm size fraction of an Ordovician K-bentonite from northern Kentucky was characterized by X-ray powder diffraction (XRD). Using A.I.P.E.A. criteria for interstratification no...
Morphology of Clay Minerals in the Smectite-to-Illite Conversion Series by Scanning Electron Microscopy
Burial diagenesis Hydrothermal alteration Illite/smectite Morphology Scanning electron microscopy Smectite-to-illite conversion
2012/1/11
The morphology of illite/smectite (I/S) from deeply buried bentonites and hydrothermally altered Tertiary volcanic rocks from Japan changes in parallel with the proportion of expandable layers in the ...
Transmission and Analytical Electron Microscopy of the Smectite-to-Illite Transition
Analytical electron microscopy Burial diagenesis Illite Interstratification Smectite Transmission electron microscopy
2012/1/11
The smectite to illite reaction was studied by transmission and analytical electron microscopy (TEM/AEM) in argillaceous sediments from depths of 1750, 2450, and 5500 m in a Gulf Coast well. Smectite ...
High Resolution Electron Microscopy of Feldspar Weathering
Feldspar Illite/montmorillonite Ion thinning Microcline Transmission electron microscopy Weathering
2012/2/9
High resolution imaging by transmission electron microscopy has revealed a mechanism for the weathering of intermediate microcline in a humid, temperate climate. Dissolution of the feldspar begins at ...
Thermal Transformation of Chrysotile Studied by High Resolution Electron Microscopy
Asbestos Chrysotile Electron Microscopy Enstatite Forsterite Lattice-imaging Selected Area Diffraction
2012/2/9
Thermal transformation of chrysotile from Uruaçu District, state of Goiás, Brazil, heated in dry conditions at temperatures from 600°C to 1300°C was studied by high resolution electron microsco...
Characterization of Morphological Features of Soil Micas Using Scanning Electron Microscopy
Exfoliation Mica Muscovite Splitting Weathering
2012/2/10
Morphological changes occurring in naturally weathered micas in seven residual soils from Ontario were studied. Splitting, exfoliation of the (100) planes, surface coats, filling of spaces with soil m...
Scanning Electron Microscopy of Quartz in Precambrian Cherts and Dolomites from Southern Africa
Chert Crystallization Dolomite Morphology Metamorphism Quartz
2012/2/10
Scanning electron microscopic (SEM) examination of the quartz isolated from chert of Transvaal and Swaziland, of 2000 and 3400 million year (MY) ages, respectively, in southern Africa revealed marked ...
Scanning Electron Microscopy of Cherts in Relation to the Oxygen Isotopic Variation of Soil Quartz
Scanning Electron Microscopy Cherts Oxygen Isotopic Variation Soil Quartz
2012/2/15
Quartz isolated from soils by the pyrosulfate-H2SiF6 method and chert samples of various origins were examined with the scanning electron microscope. Quartz isolates of the 20?0 祄 from the A2 and B2lt...