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Calculated X-ray diffraction curves for the interpretation of a three-component interstratified system

Published online by Cambridge University Press:  09 July 2018

P. D. Cradwick  and
M. J. Wilson
P. D. Cradwick
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen AB9 2QJ, Scotland
M. J. Wilson
Affiliation:
The Macaulay Institute for Soil Research, Craigiebuckler, Aberdeen AB9 2QJ, Scotland
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Abstract

Three-component interstratification of layer silicate minerals in the clay fractions of soils and sediments is probably more common than is generally realized. However, interpretation of the proportion and arrangement of the various components from experimentally recorded X-ray diffraction curves is difficult and in this paper a series of calculated diffraction patterns are presented which illustrate the types of diffraction patterns obtained from interstratified mica-vermiculite-montmorillonite systems.

Résumé

Résumé

L'interstratification de trois constituents de minéraux formés de silicates en couches dans les fractions argileuses de sols et sédiments est probablement plus commune qu'on ne s'en rend généralement compte. Cependant il est difficile d'interpréter la proportion et l'agencement des différents constituants en se basant sur des courbes de diffraction des rayons X enregistrées expérimentalement et ce rapport présente une série de diagrammes de diffraction calculés qui illustrent les types de diagrammes de diffraction obtenus à partir de systèmes interstratifiés mica-vermiculite-montmorillonite.

Kurzreferat

Kurzreferat

Wechsellagerung mit drei Komponenten bei Schichtsilikaten in Tonfraktionen von Böden und Sedimenten ist wahrscheinlich häufiger als allgemein angenommen. Allerdings ist die Interpretation bezüglich Verhältnis und Anordnung der verschiedenen Komponenten auf Grund von experimentell erhaltenen Röntgendiffraktometerkurven schwierig. In dieser Arbeit werden einige berechnete Beugungsdiagramme vorgelegt, welche die Typen von Beugungsdiagrammen aufzeigen sollen, wie sie sich aus Glimmer-Vermiculit-Montmorillonit-Wechsellagerungen ergeben.

Resumen

Resumen

La interestratificación ternaria de minerales de silicato en capas en las fracciones arcillosas de suelos y sedimentos es probablemente más común de lo que se piensa generalmente. Sin embargo, es dificil la interpretación de la proporción y la disposición de los diversos componentes a partir de las curvas de difracción de rayos X obtenidas, yen este trabajo se presenta una serie de curvas de difracción calculadas que ilustran los tipos de formas de difracción que se obtienen de los sistemas de mica-vermiculita-montmorillonita.

Type
Research Article
Information
Clay Minerals , Volume 13 , Issue 1 , March 1978 , pp. 53 - 65
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1978

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