Clay Science
Online ISSN : 2186-3555
Print ISSN : 0009-8574
ISSN-L : 0009-8574
MICROCALORIMETER ENERGY-DISPERSIVE X-RAY SPECTROMETRY OF CLAY MINERALS BY TRANSMISSION ELECTRON MICROSCOPE
KATSUAKI WATANABETORU HARAKEIICHI TANAKAYOSHIO MATSUI
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2010 Volume 14 Issue 5 Pages 173-176

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Abstract
A qualitative chemical analysis of three reference clay minerals, Mikawa montmorillonite, synthetic saponite and Nabeyama illite, was performed using a recently developed TEM-EDS set-up built around a microcalorimeter device that has a very high energy resolution. The spectrum obtained by the microcalorimeter EDS showed the small peaks of minor elements present in these clay minerals. It was also used to detect the SKβ peak in saponite and the SiKβ' peak in montmorillonite and saponite whereas by conventional Si(Li) EDS, these peaks disappeared or overlapped. Microcalorimeter EDS with TEM provided us with valuable elemental data of clay minerals in this study, and will considerably contribute to the progress of the study of clay minerals.
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© 2010 The Clay Science Society of Japan
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