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Mineralogical and technological characteristics of Cyprus bentonites
Ppalos, Christodoulos ; Přikryl, Richard (advisor) ; Jelínek, Emil (referee)
The Cypriot deposits of bentonite, Phiti, Statos and Pedakomo are located in an autochthon sediment zone, which represents sediments during the marine regression in the period Upper Cretaceous - Pleistocene (67 Ma to 0.0117 Ma). The goal of this thesis is to suggest potential applications of bentonite, through the study of mineralogical composition and analysis of selected properties (chemical, physical and mechanical). The mineralogical study of Cypriot bentonite using X-ray diffraction analysis has proven the existence of clay mineral belonging to the group of smectite (montmorillonite), as well as the existence of minority illite and kaolinite. From non-clay minerals, the majority of the samples contained zeolite (clinoptilolite), quartz, feldspar and in some samples calcite. The semiquantitative representation of crystalline phases, found during the mineralogical study, was calculated through the chemical analysis. The calculations suggest that Cypriot bentonite is composed of 47 - 58 % smectite, 3 - 19 % kaolinite, 3 - 11 % illite, 3 - 10 % clinoptilonite, 8 - 17 % quartz and 2 - 5 % feldspar. From the physicochemical properties, the cation exchange capacity and specific surface area were studied. The values of cation exchange capacity fluctuate in a range 15.8 - 64.3 meq/100g for individual...
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Mineralogical and technological characteristics of Cyprus bentonites
Ppalos, Christodoulos ; Přikryl, Richard (advisor) ; Jelínek, Emil (referee)
The Cypriot deposits of bentonite, Phiti, Statos and Pedakomo are located in an autochthon sediment zone, which represents sediments during the marine regression in the period Upper Cretaceous - Pleistocene (67 Ma to 0.0117 Ma). The goal of this thesis is to suggest potential applications of bentonite, through the study of mineralogical composition and analysis of selected properties (chemical, physical and mechanical). The mineralogical study of Cypriot bentonite using X-ray diffraction analysis has proven the existence of clay mineral belonging to the group of smectite (montmorillonite), as well as the existence of minority illite and kaolinite. From non-clay minerals, the majority of the samples contained zeolite (clinoptilolite), quartz, feldspar and in some samples calcite. The semiquantitative representation of crystalline phases, found during the mineralogical study, was calculated through the chemical analysis. The calculations suggest that Cypriot bentonite is composed of 47 - 58 % smectite, 3 - 19 % kaolinite, 3 - 11 % illite, 3 - 10 % clinoptilonite, 8 - 17 % quartz and 2 - 5 % feldspar. From the physicochemical properties, the cation exchange capacity and specific surface area were studied. The values of cation exchange capacity fluctuate in a range 15.8 - 64.3 meq/100g for individual...
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