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Effect of biotite on the firing characteristics of certain weathered schists

Published online by Cambridge University Press:  02 May 2018

K. Norrish
Affiliation:
Division of Soils, C.S.I.R.O., Adelaide, South Australia
E. W. Radoslovich
Affiliation:
Division of Soils, C.S.I.R.O., Adelaide, South Australia
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Abstract

A study was made of five clays used for brickmaking to determine the reason why certain clays crumbled on firing. Partially weathered biotite was found to be a constituent of the clays which crumbled and the crumbling was due to this mineral exfoliating and so disrupting the bricks at a comparatively low temperature. Fresh biotite and highly weathered biotite do not have this adverse effect.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1957

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References

Gaskin, A. J. and Samson, H. R. 1951. Bull. geol. Surv. S. Aust., (28).Google Scholar
Walker, G. F. 1949. Miner. Mag., 28, 693.Google Scholar