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Powder X-ray characterisation of natrolite, Na2Al2Si3O10.2H2O

Published online by Cambridge University Press:  10 January 2013

A. A. Finch ,
J. G. Fletcher ,
A. Kindness  and
J. M. S. Skakle
A. A. Finch
Affiliation:
Faculty of Applied Sciences, University of Luton, Park Square, Luton, LU1 3JU, United Kingdom
J. G. Fletcher
Affiliation:
Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB9 2UE, United Kingdom
A. Kindness
Affiliation:
Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB9 2UE, United Kingdom
J. M. S. Skakle
Affiliation:
Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB9 2UE, United Kingdom
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Abstract

High-quality powder X-ray diffraction data for a well-characterised natural sample of natrolite (Na2Al2Si3O10.2H2O, space group Fdd2, Z = 8) are presented. Refined cell parameters were a = 18.2984±0.0007 Å, b = 18.6502±0.0008 Å, and c = 6.5589±0.0003 Å. The sample was characterised using thermogravimetric techniques (to determine water content), EPMA and ICP-MS (to determine composition). Available data suggest that the crystal matches the expected stoichiometry of natrolite. Our powder data show close similarity with the proposed structure of natrolite using the Rietveld method, giving R values of 8.54%, and suggest that preferred orientation is not present in the sample.

Keywords

natroliteIlìmausaqSouth GreenlandGardar ProvinceRietveld refinementzeolite
Type
Research Article
Information
Powder Diffraction , Volume 10 , Issue 4 , December 1995 , pp. 243 - 247
Copyright
Copyright © Cambridge University Press 1995

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