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Allophanic soil from Trail Bridge, Oregon, with notes on mosaic growth in clay minerals

Published online by Cambridge University Press:  14 March 2018

R. H. S. Robertson
R. H. S. Robertson*
Affiliation:
Dunmore, Pitlochry, Perthshire
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Abstract

A Quaternary or Recent tuff or pumice has weathered to an allophanic soil reminiscent of some described by Sudo. The soil has interesting engineering properties. Electronmicrographs show the apparent coalescence of alophane ribbons into a thin platy mineral, probably an early form of hydrated halloysite. The formation of crystals by the coalescence of mosaic crystallites is discussed.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 5 , Issue 29 , July 1963 , pp. 237 - 247
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1963

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References

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