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Geological Society, London, Engineering Geology Special Publications

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Geological Society, London, Engineering Geology Special Publications; 2006; v. 21; p. 449-459;
DOI: 10.1144/GSL.ENG.2006.021.01.16
© 2006 Geological Society of London

Appendix A. Mineralogical and chemical data

This appendix presents data on the clay mineral, non-clay mineral and chemical composition of a small but varied collection (N = 105) of clay materials from the BritishIsles. This collection was assembled and analyzed during the writing of this report, such that the data have not been published elsewhere.

Of course, there are many sources of mineralogical and chemical data on clay materials. In the British context these include several well-known publications which have attempted to compile and summarize data from many disparate sources (Perrin 1971; Ridgway 1982; Sellwood & Sladen 1981; Shaw 1981). The monograph compiled by Perrin (1971) was published by the Mineralogical Society of Great Britain and Ireland, and is yet to be superseded in scope; although it should be noted that, at the time of writing, the Mineralogical Society is in the process of preparing a multi-author book review of the knowledge and progress in understanding of the clay mineralogy of the UK stratigraphic column, made since the publication of Perrin's 1971 monograph (Jeans & Merriman 2006).

The publication by Shaw (1981) is an overview of the mineralogy and petrology of the argillaceous rocks of the UK. Shaw's discussion of the non-clay mineralogy of these rocks was severely limited by lack of available data, but trends and patterns in the clay mineral assemblages, based on analyses of clay-sized fractions, throughout the UK stratigraphic column were presented and discussed. The paper by Sellwood & Slade (1981), which appeared in the same thematic volume of the Quarterly Journal

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