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Thermal expansion behaviour of beryllonite [Na(BePO4)] and trimerite [CaMn(BeSiO4)3]

Published online by Cambridge University Press:  05 July 2018

C. M. B. Henderson  and
D. Taylor
C. M. B. Henderson
Affiliation:
Department of Geology, The University, Manchester M13 9PL
D. Taylor
Affiliation:
Department of Geology, The University, Manchester M13 9PL
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Abstract

The thermal expansions of trimerite and beryllonite have been determined up to 800°C. No anomalies were observed in the thermal expansion curves but the expansion coefficients for beryllonite are approximately twice those of trimerite. The thermal expansion behaviour of the minerals is interpreted in terms of a tetrahedral tilting model with the main change in apparent tilting being about the monoclinic 010 plane, i.e. the 0001 pseudo-hexagonal plane.

Type
Research Article
Information
Mineralogical Magazine , Volume 48 , Issue 348 , September 1984 , pp. 431 - 436
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1984

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Footnotes

*

Present address: 15 Leigh Road, Congleton, Cheshire CW12 2EG.

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