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Synthesis, properties, and dehydroxylation of members of the crandallite-goyazite series

Published online by Cambridge University Press:  05 July 2018

R. J. Gilkes  and
B. Palmer
R. J. Gilkes
Affiliation:
Department of Soil Science and Plant Nutrition, University of Western Australia, Nedlands, Western Australia, 6009, Australia
B. Palmer
Affiliation:
Department of Soil Science and Plant Nutrition, University of Western Australia, Nedlands, Western Australia, 6009, Australia
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Abstract

Unit-cell parameters of synthesized members of the crandallite (a = 7.007 Å, c = 16.216 Å)-goyazite (a = 7.013 Å, c = 16.650 Å) series vary linearly with composition between end-members. Most members of the series consist of 0.1 μm platy crystals, but crandallite also contains some larger (1–5 µm) tapered crystals elongated along the c axis.

With increasing Sr substitution the dehydroxylation temperature decreases from c. 475 °C for crandallite to 420 °C at 20 mole % Sr, and then increases to 440 °C for goyazite. Partial dehydroxylation of crandallite is accompanied by contraction of the c unit cell parameter and expansion of a, thereby retaining an unaltered unit cell volume. The much greater sensitivity of c to both Sr substitution and dehydroxylation may be due to the rigidity of continuous sheets of Al(OH)4O2 octahedra which are parallel to the (001) plane in these minerals.

Type
Research Article
Information
Mineralogical Magazine , Volume 47 , Issue 343 , June 1983 , pp. 221 - 227
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1983

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References

Ankinowitch, E. A., and Silantjewa, N. I. (1959) Izv. Akad. Nauk Kazakh. SSR, ser geol. 36, 78–81.Google Scholar
Blanchard, F. N. (1972) Q. J. Fla. Acad. Sci. 34, 1–9.Google Scholar
Blount, A. M. (1974) Am. Mineral. 59, 41–7.Google Scholar
Cowgill, U. M., Hutchinson, G. E., and Joensuu, O. (1963) Ibid. 48, 1144–53.Google Scholar
Doak, B. W., Gallaher, P. J., Evans, L., and Muller, F. B. (1965) N. Z. J. Agric. Res. 8, 15–29.CrossRefGoogle Scholar
Gard, J. A., ed. (1971) The electron-optical investigation of clays, Mineralogical Society, London.CrossRefGoogle Scholar
Gilkes, R. J., and Palmer, B. (1979) Aust. J. Soil Res. 17, 467–81.CrossRefGoogle Scholar
Guillemin, J. (1955) Bull. Soc.fr. Mineral. Cristallogr. 78, 27–32.Google Scholar
Hill, W. L., Armiger, W. H. and Gooch, S. D. (1950) Trans. Am. Inst. Min. (Metall.) Eng. 187, 699–702.Google Scholar
Hoare, J. (1980) In The Role of Phosphorus in Agriculture (Khasawneh, F. E. et al, eds.) Madison, Wisconsin, American Soc. Agron. 121–7.Google Scholar
Ignatova, L. I., Karpova, L. N., and Zhil'tozova, I. G. (1965) Geokhimiya, 18, 1355–9.Google Scholar
Kato, T., and Radoslovich, E. W. (1968) Trans. 9th Congr. Int. Soil Sci. Soc, Adelaide, 2, 725–31.Google Scholar
Klug, H. P., and Alexander, L. E. (1962) X-ray Diffraction Procedures. John Wiley, New York.Google Scholar
Mackenzie, R. C, ed. (1970) Differential Thermal Analysis, Academic Press, London.Google Scholar
McKie, D. (1962) Mineral. Mag. 33, 281–97.Google Scholar
Mitchell, R. S., and Knowlton, S. M. (1971) Mineral. Rec. 2, 223–4.Google Scholar
Nicolas, J., and de Rosen, A. (1963) Bull. Soc.fr. Mineral. Cristallogr. 86, 379–85.Google Scholar
Norrish, K. (1968) Trans. 9th Congr. Int. Soil Sci. Soc, Adelaide, 2, 713–23.Google Scholar
Palache, C., Berman, H., and Frondel, C. (1951) Dana's System of Mineralogy, 2, 834–7. John Wiley, New York.Google Scholar
Palmer, B. (1979) A chemical, mineralogical and biological evaluation of Christmas Island C-grade rock phosphate. Ph.D. thesis, University of Western Australia.Google Scholar
Povondra, P., and Slansky, E. (1966) Acta Univ. Carolinae, Geol. 1, 61–76.Google Scholar
Radoslovich, E. W. (1969) CSIRO Australia, Div. Soils Tech. Memo 10. Google Scholar
Radoslovich, E. W. and Slade, P. G. (1980) Neues Jahrb. Mineral. Mh. 157–70.Google Scholar
Rao, A. B. (1966) Mineral. Mag. 35, 427–8.Google Scholar
Slade, P. G. (1974) Neues Jahrb. Mineral. Mh. 22–7.Google Scholar