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Composition of Clinoptilolite Formed from Volcanic Glass during Burial Diagenesis
Burial Diagenesis Cation Exchange Clinoptilolite Volcanic Glass Zeolite
2011/12/2
Abstract: The composition of clinoptilolite formed from volcanic glass was investigated from cuttings collected from the offshore MITI-Somaoki borehole, 52 km east of Soma City, Japan. Unaltered volca...
Analytical Electron Microscopic Study of the Noncrystalline Products Formed at Early Weathering Stages of Volcanic Glass
Formation Process Halloysite Noncrystalline Material Pumice Weathering Product
2011/12/22
Abstract: Formation processes of weathering products of pumice collected from a rhyolitic pyroclastic flow deposit were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SE...
Synthesis of Smectite from Volcanic Glass at Low Temperature
Low temperature Smectite Sodium hydroxide concentration Synthesis Volcanic glass Zeolites
2011/12/30
Smectite and zeolites were formed from a volcanic glass as the products of reaction with NaOH solution at 90°C and 100°C under atmospheric pressure. Formation conditions of smectite and various zeolit...
Formation of Allophane and Beidellite During Hydrothermal Alteration of Volcanic Glass Below 200°C
Allophane Amorphous aluminum-silicate coating Experimental alteration Smectite Transitional material Volcanic glass
2011/12/31
Experimental alteration of volcanic glass has been carried out in distilled water at 200°C and 150°C. The formation and transformation processes of alteration products have been examined by scanning e...
Structural Water in Volcanic Glass
Glass Heavy-ion Rutherford scattering High-resolution transmission electron microscopy Structural water
2011/12/1
Abstract: High-resolution transmission electron microscopy has revealed spherical and hemispherical structures on the surface of partly hydrated volcanic and synthetic glasses. These structures contra...