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The Relationship between the Thermal Behavior of Clinoptilolite and Its Chemical Composition

Published online by Cambridge University Press:  28 February 2024

Konstantinos P. Kitsopoulos
Konstantinos P. Kitsopoulos*
Affiliation:
Geology Department, Leicester University, Leicester LE1 7RH, UK
*
†Present address: 16 Aiolou Str., Paleo Faliro, Athens, 175-61, Greece
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Abstract

The matrix of the Pliocene volcaniclastics from the Akrotiri area of the Santorini island (Greece) is dominated by clinoptilolite. Smectite, occasionally illite-smectite, opal-CT, cristobalite and mordenite are also present. The clinoptilolite-rich samples were heated at 460 and 560°C for 12 h and the reductions in the intensity of the 020 diffraction peak were measured. Electron microprobe analysis (EMPA) was then used to study the chemical composition of the clinoptilolite. Statistical analysis proved a strong and quantifiable relationship between the reduction of the 020 diffraction peak of the clinoptilolite and the Na/K ratio. A representative set of microprobe analyses of clinoptilolite was performed before any correlation with thermal behavior was attempted. The presence of K in the structure of clinoptilolite as well as its relationship with Na are most important in the thermal behavior of clinoptilolite.

Keywords

Chemical CompositionClinoptilolite020 Diffraction PeakElectron Microprobe AnalysisGreeceSantoriniZeolites
Type
Research Article
Information
Clays and Clay Minerals , Volume 49 , Issue 3 , June 2001 , pp. 236 - 243
Copyright
Copyright © 2001, The Clay Minerals Society

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