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Crystallization Processes and Role of Compositional Convection in the Macrolayer Formation in a Small Layered Complex
quartz-gabbro Crystallization Processes Macrolayer Formation
2009/7/8
The Peloso complex is a 1000m thick gabbroic body composed of two main layered zones (ZA and ZB) that are made up of cyclic macrolayers of olivine gabbro, leucogabbronorite and anorthosite cumulates, ...
Thickness and Surface Characteristics of Colloidal 2:1 Aluminosilicates Using an Indirect Fourier Transform of Small-Angle X-ray Scattering Data
Illite Indirect Fourier Transform Montmorillonite SAXS Thickness
2011/12/5
Abstract: An indirect Fourier transformation applied to small-angle X-ray scattering data has been used to determine the thickness and surface properties of two common clay minerals. For an illite sys...
Study of a Commercial SiO2 Sol and Gel by Small Angle X-ray Scattering: Effect of Sample Thickness and Interpretation by Means of Smoluchowski Scheme
Dependence of Sample Thickness Ludox HS SiO2 SAXS Smoluchowski Scheme Structure in sol
2011/12/23
Abstract: Ludox HS SiO2 sols at high concentrations show a peak in small angle x-ray scattering (SAXS) reminiscent to a “structure.” The appearance of such a peak was found to depend crucially on the ...
Mobility of Small Molecules in Interlayers of Hectorite Gels: ESR Study with an Uncharged Spin Probe
ESR Hectorite Molecular mobility
2011/12/29
Electron spin resonance (ESR) spectroscopy was used to measure the rotational mobility of an uncharged nitroxide spin probe (4-hydroxy-2,2,6,6-tetramethyl-piperidinyloxy) in hectorite gels of variable...
Small-Angle X-Ray Powder Diffraction, Morphology, and Structure of Allophane and Imogolite
Allophane Dehydroxylation Imogolite Infrared spectroscopy Morphology Small angle scattering
2012/2/1
Small-angle X-ray powder diffraction analyses and high-resolution electron microscopy of allophane samples (SiO2/Al2O3 ratio, 1.12 to 1.68) showed that allophanes consist of nearly identical spherical...
Determination of the Cation-Exchange Capacity (Layer Charge) of Small Quantities of Clay Minerals by Nephelometry
Exchange Microanalysis Nephelometry Smectite
2012/2/9
Nephelometric (light scattering) methods for the determination of Ca and Ba in the 0–30 ppm range, and their application to the estimation of the cation exchange capacity (±10%) of small (≤30 mg) samp...
The Conversion of X-Ray Intensity Ratios to Composition Ratios in the Electron Probe Analysis of Small Particles Using Mineral Standards
Albite Biotite Illite Kaolinite Orthoclase Phlogopite
2012/2/10
X-ray intensity ratios of Si/Al, Si/Fe, and Al/Fe in micron-sized particles of geochemical standards were found to vary linearly with the composition ratio. The same linear relationship was found for ...
Mossbauer Studies of Small Particles of Iron Oxides in Soil
Mossbauer Studies Small Particles Iron Oxides in Soil
2012/2/15
A soil of Attica (Greece) has been studied by Mössbauer spectroscopy and magnetization measurements in order to ascertain the nature and form of iron oxides present in it. The room temperature sp...