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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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References

Deer, W. A., Howie, R. A., and Zussman, J: (1983). An Introduction to the Rock-forming Minerals (Longman, Harlow, UK), pp. 528.Google Scholar
Emeleus, C. H., and Upton, B. G. J. (1976). “The Gardar Period in Southern Greenland,” in The Geology of Greenland, edited by Escher, A. and Watt, W. S. (Grønlands Geologiske Undersøgelse, Copenhagen), pp. 152–181.Google Scholar
Finch, A. A. (1990). “The Chemical and Isotopic Nature of Fluids Associated with Alkaline Magmatism, South Greenland,” unpubl. Ph.D. thesis, University of Edinburgh, UK.Google Scholar
Larsen, L. M., and Sørensen, H. (1987). “Progressive Crystallisation and Layering in an Agpaitic Magma,” in Alkaline Igneous Rocks, edited by Fitton, J. C. and B. G. J. Upton Spec. Publ. Geol. Soc. London 30, 473–488.Google Scholar
Meier, W. M. (1960). “The Crystal Structure of Natrolite,” Z. Krist. 113, 430–444.Google Scholar
Rietveld, H. M. (1969). “A Profile Refinement Method for Nuclear and Magnetic Structures,” J. Appl. Cryst. 2, 65–84.Google Scholar
Sørensen, H. (1962). On the Occurrence of Steenstrupine in the Ilìmaussaq Massif, Southwest Greenland, Meddr. Grønland, 167(1), pp. 251.Google Scholar
Upton, B. G. J., and Emeleus, C. H. (1987). “Mid-Proterozoic Alkaline Magmatism in Southern Greenland: The Gardar Province, in Alkaline Igneous Rocks, edited by Fitton, J. G. and B. G. J. Upton Spec. Publ. Geol. Soc. London 30, 449–471.Google Scholar