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The crystalline structure of zircon

Published online by Cambridge University Press:  14 March 2018

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Extract

In a proper recently published by Prof. Vegard is contained an analysis of the structure of the zircon group of crystals, which belong to the tetragonal holohedral class, the axial ratio being approximately a : c = 1 : 0.656.

As the present work was completed when the above paper appeared, it is interesting to find that the principal deductions concerning the structure of zircon, ZrSiO4, are confirmatory. The parametral values are, however, slightly different. This difference, though small in itself, is found to introduce larger discrepancies between the observed and calculated intensities of reflection.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 21 , Issue 115 , December 1926 , pp. 176 - 187
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1926

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References

page 176 note 1 Vegard, L., Phil. Mag., 1926, ser. 7, vol. 1, p. 1151 Google Scholar.

page 176 note 2 Groth, P., Chemischo Krystallographie, 1906, vol. 1, p. 92 Google Scholar.

page 176 note 3 Kupffer, A. T., Preisschrift fiber genaue Messung der Wiukel an Krystallen. Berlin, 1825, p. 66 Google Scholar.

page 177 note 1 Although zircons range from 4.0 to 4.7 in density (Min. Mag., 1904, vol. 14, p. 48.)

page 180 note 1 The parameters are expressed as angular differences of phase, the dimensions of the axes representing 360° in their respective direction.

page 182 note 1 Bragg, W. L., Phil. Mag., 1925, ser. 6, vol. 50, p. 30 Google Scholar.

page 182 note 2 Wingårdli, K. A., Zeiss. Physik, 1922, vol. 8, p. 37 Google Scholar.

page 183 note 1 Hartree, D. R., Phil. Mag., 1925. ser. 6, vol. 50, p. 289 Google Scholar.

page 183 note 2 James, E. W. and Wood, W. A., Proc. Eoy. Soc. London, Ser. A, 1925, vol. 109, p. 588 Google Scholar.