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A chlorite convention for the appraisal of Scottish fireclays

Published online by Cambridge University Press:  14 March 2018

J. Brough
Affiliation:
Southhook Potteries, Ltd., Kilmarnock, Ayrshire
Robert H. S. Robertson
Affiliation:
16 Kirklee Road, Glasgow, W.2
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Abstract

After CO2 and C are allocated to carbonates and carbonaceous matter, FeO and MgO are allocated to a hypothetical “average” chlorite of composition 12(Fe, MgO). 3Al2O3. 7SiO2. 10H2O, K2O is allocated to muscovite, remaining Al2O3 to kaolinite, remaining SiO2 to quartz, calculated hydroxyls usually agree well with H2O+. Calculated mineral analyses agree well with practical assessment and thermal expansion curves. Chlorite and chlorite-illite are known to occur (X-rays) in this series of clays.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1958

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References

References

Imbrie, J. and Poldervaart, A. 1957. Bull. Geol. Soc. Amer., 68, 1750 (abstract).Google Scholar
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References

Mackenzie, R. C., Meldau, R. and Farmer, V. C. 1956. Ber. dtsch. keram. Ges., 33, 222229.Google Scholar