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Quantitative determination of water in granites by infra-red analysis

Published online by Cambridge University Press:  05 July 2018

J. W. Aucott  and
M. Marshall
J. W. Aucott
Affiliation:
Department of Geology, The University, Durham
M. Marshall
Affiliation:
Department of Chemistry, The University, Bristol 8
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Summary

Two methods using nujol and hexachloro-butadiene mulls are described to analyse the water content of powdered granite samples. The nujol mull analyses were carried out on a Unicam SP 100 spectrometer using the silica content of the rock as an internal standard. The hexachlorobutadiene mull analyses were done by a twin-path Unicam SP 200 spectrometer, using hexachlorobutadiene as the internal standard. The broader and more pronounced V1 vibrational mode (3450 cm−1) is ratioed to a standard of known composition. Comparisons are also made between absorption due to free water (V1 = 3450 cm−1) and combined water (V3 = 3680 cm−1) in aplites, biotite granite, and chlorite schists.

Type
Research Article
Information
Mineralogical Magazine , Volume 37 , Issue 286 , June 1969 , pp. 256 - 261
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1969

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