A study of some glauconites from cretaceous and tertiary formations in South-East England
- 1 December 1968
- journal article
- Published by Mineralogical Society in Clay Minerals
- Vol. 7 (4) , 431-440
- https://doi.org/10.1180/claymin.1968.007.4.06
Abstract
A study of soil formation on glauconitic parent materials in South-East England has included a mineralogical investigation of glauconite grains, heretofore identified solely by morphology. The grains have been subjected to X-ray diffraction, differential thermal and partial chemical analyses, and have been found to consist essentially of randomly interstratified micaceous and montmorillonitic clay mineral; thus all are glauconite sensu lato. Only small amounts of non-clay mineral impurities have been detected. The proportion of expandable layer material has been found to be related to the % K2O and cation exchange capacity of the specimens.Keywords
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