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BeO in pegmatitic cordierite

Published online by Cambridge University Press:  14 March 2018

Robert C. Newton
Robert C. Newton*
Affiliation:
Department of the Geophysical Sciences, University of Chicago, Chicago 37, Illinois, U.S.A.
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Summary

Several cordierites from pegmatites were found by emission spectroscopy to contain as much as 0·7 wt. % of BeO. Structural crystallographic considerations suggest that the beryl molecule, Be3Al2Si6O18, may have appreciable solubility in the structure of cordierite. Some hydrothermal experiments carried out on this assumption indicated about the same amount of BeO substitution in the magmatic temperature range as is shown by the pegmatite cordierites. The natural BeO-bearing cordierites have distinctive infra-red absorption properties, which are reproduced in the synthetic solid solutions.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 275 , September 1966 , pp. 920 - 927
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1966

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