Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-05T13:42:43.072Z Has data issue: false hasContentIssue false
  • English
  • Français

A relation between the density and refractive index of silicate glasses, with application to the determination of imitation gem-stones

Published online by Cambridge University Press:  14 March 2018

F. A. Bannister
F. A. Bannister*
Affiliation:
Mineral Department of the British Museum of Natural History
Get access Rights & Permissions [Opens in a new window]

Extract

It has long been possible to identify readily many minerals by means of density and refractive index determinations, and the chemical composition also can often be approximately deduced. Tilley has shown that it is practicable to determine any natural glass by this method and be succeeded in separating the natural glasses into groups characterized by certain limits of specific refractivity. As far as the author is aware, no such systematic method has been described for distinguishing the artificial glasses one from the other, and it is these glasses that we are concerned with in attempting to determine the approximate composition of an imitation gem-stone without the aid of chemical analysis.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 22 , Issue 126 , September 1929 , pp. 136 - 154
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1929

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

page 136 note 1 Tilley, C. E., Min. Mag., 1922, vol. 19, p. 275.CrossRefGoogle Scholar

page 138 note 1 Peddle, C. J., Journ. Soe. Glass Tech., 1920, vol. 4, p. 225.Google Scholar

page 138 note 2 F. E., Wright, Journ. Amer. Ceramic Soc., 1920, vol. 3, p. 783.Google Scholar

page 138 note 3 Peddle, C. J., Journ. Soc. Glass Tech., 1920, vol. 4, pp. 20, 46, 59.Google Scholar

page 138 note 4 Ibid., p. 299, and 1921, vol. 5, p. 201.

page 139 note 1 , E. S., Amer. Journ. Sci., 1909, ser. 4, vol. 28, pp. 263.Google Scholar

page 146 note 1 S., English and W. E. S., Turner, Journ. Soc. Glass Tech., 1923, vol. 7, p. 155.Google Scholar

page 146 note 2 Morey, G. W., International Critical Tables, 1927, vol. 2, p. 102.Google Scholar

page 146 note 3 Wright, F. E., Journ. Amer. Ceramic Sot., 1920, vol. 3, p. 783.CrossRefGoogle Scholar

page 149 note 1 Stahl, C. J., Die Glashütte, Dresden, 1926, vol. 56 Google Scholar and 1927, vol. 57, gives batch compositions for glasses used the production of glass jewellery, pendants, beads, and imitation gem-stones.

page 151 note 1 Williams, G., Proe. Roy. Soc. London, 1873, vol. 21, p. 409.CrossRefGoogle Scholar

page 151 note 2 Lai, C. F. and Silvermann, A., Journ. Amer. Ceramic Soe., 1928, vol. 11, pp. 535.CrossRefGoogle Scholar

page 154 note 1 Baillie, W. L., Journ. Soc. Chem. Ind., 1921, vol. 40, pp. 141.Google Scholar

page 154 note 2 Larsen, E. S., The microscopic determination of nonopaque minerals, 1921, p. 31.Google Scholar