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Mineral quantification in sepiolite-palygorskite deposits using X-ray diffraction and chemical data

Published online by Cambridge University Press:  09 July 2018

A. Lopez Galindo ,
J. Torres Ruiz  and
J. M. Gonzalez Lopez
A. Lopez Galindo
Affiliation:
Instituto Andaluz de Ciencias de la Tierra, CSIC - University of Granada, Avda. Fuentenueva, s/n. 18002 Granada, Spain
J. Torres Ruiz
Affiliation:
Dpto. Mineralogía y Petrología, Faculty of Science, University of Granada, Spain
J. M. Gonzalez Lopez
Affiliation:
Dpto. Ciencias de la Tierra, Faculty of Science, University of Zaragoza, Spain
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Abstract

A quantification technique useful in analysis of clay-rich deposits containing sepiolite and/or palygorskite has been developed by combining diffractometric and chemical data and represents a considerable improvement on classic quantification based on X-ray diffraction. The required data are: intensity ratios between certain diffraction peaks of calcite-dolomite and sepiolite-palygorskite-smectites, and also the CaO, MgO, K2O, Al2O3 and SiO2 contents. The validity of this method was tested by analysis of artificial mixtures of pure phases of the minerals found in such deposits.

Type
Research Article
Information
Clay Minerals , Volume 31 , Issue 2 , June 1996 , pp. 217 - 224
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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