Journal ArticleDOI
Unusual X-Ray Characteristics of Vermiculite from Wiry, Lower Silesia, Poland
TLDR
In this article, X-ray diffraction simulations and fitting techniques show that the 28 A peak is related to 28 A domains consisting of elongated 2:1 layers of different lengths.Abstract:
Coarse-grained vermiculite from a serpentinite-pegmatite thermal zone displays a rational series of narrow 14.4 A basal reflections and an unusual broad 28 A peak. X-ray diffraction simulations and fitting techniques show that the 28 A peak is related to 28 A domains consisting of elongated 2:1 layers of different lengths. The domains are located at the crystal edges of the vermiculite.read more
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Serpentine-smectite interstratified minerals from lower silesia (sw poland)
Boris A. Sakharov,Elzibieta Dubińska,Paweł Bylina,J.A. Kozubowski,Grzegorz Kaproń,Małgorzata Frontczak-Baniewicz +5 more
TL;DR: In this paper, the interstratified serpentine-smectite was found in the fine-grained fraction of altered metasomatic contact biotite-schists developed between serpentinite and granite-type rocks (Lower Silesia ophiolite sequence, Poland).
Journal ArticleDOI
Effects of exchanged cation, acid treatment and high shear mechanical treatment on the swelling and the particle size distribution of vermiculite
Marvin Marco Chambi-Peralta,Antonio Carlos Vieira Coelho,Flavio Machado de Souza Carvalho,Samuel Márcio Toffoli +3 more
TL;DR: In this paper, the effect of three different chemical treatments on the swelling and the particle size distribution of a vermiculite sample from of the State of Goias, central-west Brazil, by using inorganic solutions of LiCl, NaCl, and HCl, accompanied by a high shear mechanical treatment.
Journal ArticleDOI
Influence of crystal structure defects on the small-angle neutron scattering/diffraction patterns of clay-rich porous media
Eric Ferrage,Fabien Hubert,Alain Baronnet,Olivier Grauby,Emmanuel Tertre,Alfred Delville,Isabelle Bihannic,Dimitri Prêt,Laurent J. Michot,Pierre Levitz +9 more
TL;DR: In this paper, small-angle neutron scattering and neutron diffraction patterns are calculated for three-dimensional virtual porous media representative of packed swelling clay particles (i.e., 0.1-0.2 µm size fraction of vermiculite).
Journal ArticleDOI
Adsorption of nerve agent simulants onto vermiculite structure: Experiments and modelling.
Daniela Plachá,Petr Kovář,Jakub Vaněk,Marcel Mikeska,Kateřina Škrlová,Ondřej Dutko,Lenka Řeháčková,Jiří Slabotinský +7 more
TL;DR: Molecular modelling was used to confirm the experimental results and provide a deeper insight into the structure of the materials and sorption processes, which remain very effective, environmentally friendly and not expensive.
Journal ArticleDOI
Physio-chemical properties of gamma-irradiated vermiculite and their significance for radiation protection and thermoluminescence
TL;DR: In this article, the effects of γ irradiation on vermiculite for the first time were studied using different techniques viz. ultraviolet-visible spectroscopy (UV-Vis), dielectric measurements, X-ray diffraction (XRD), Fourier transform infrared spectroscopic (FTIR), and thermoluminescence (TL).
References
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Book
X-Ray Diffraction and the Identification and Analysis of Clay Minerals
TL;DR: The nature and production of x-rays diffraction effects structures, composition, properties and occurences of clay minerals sample preparation techniques for clay minerals identification of individual clay minerals and associated mineral identification of mixed layered clay minerals quantitative analysis as mentioned in this paper.
Journal ArticleDOI
XRD measurement of mean thickness, thickness distribution and strain for illite and illite-smectite crystallites by the Bertaut-Warren-Averbach technique
TL;DR: A modified version of the Bertaut-Warren-Averbach (BWA) technique was developed to measure coherent scattering domain (CSD) sizes and strains in minerals by analysis of X-ray diffraction (XRD) data.
Journal ArticleDOI
The Lorentz-polarization factor and preferred orientation in oriented clay aggregates
TL;DR: In this article, a closed-form equation was derived that describes the powder-ring distribution factor as a function of 20, soller slit collimation, and or*, which was defined as the standard deviation of an axiaUy symmetrical Gaussian orientation function.