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Experimental Alteration of Volcanic Tuff: Smectite Formation and Effect on 18O Isotope Composition
Alteration Mechanism of Volcanic Tuff Oxygen Isotope Exchange Smectite Tuff
2011/12/8
Abstract: Three samples of volcanic tuff were hydrothermally altered at ∼82°C in a soxhlet apparatus for periods from 745 to 2706 h. The samples correspond to partially altered specimens of volc...
Formation of Mica During Experimental Alteration of K-Feldspar
Dissolution mechanism Experimental alteration Fibrous boehmite K-feldspar Mica
2011/12/28
Experimental alterations of K-feldspar in distilled-deionized water at 150°, 175°, 200°, and 225°C were performed. The alteration products and dissolution mechanism of K-feldspar were examined by X-ra...
Growth of Smectite from Leached Layer During Experimental Alteration of Albite
Albite Amorphous leached layer Flaky smectite Noncrystalline fiber Transmission electron microscopy
2011/12/1
Abstract: Experimental alteration of albite in deionized-distilled water at 150° to 225°C for various times up to 30 days was performed to elucidate formation processes for alteration products of albi...
Formation of Clay Minerals During Low Temperature Experimental Alteration of Obsidian
Allophane Dealkalized leached layer Fibrous material Nonstoichiometric dissolution Obsidian Smectite
2011/12/30
Experimental alteration of obsidian in distilled-deionized water at 150? 175? 200? and 225癈 was studied. The alteration products were examined by X-ray powder diffraction, scanning electron microscopy...
Experimental Alteration of a Chlorite into a Regularly Interstratified Chlorite-Vermiculite by Chemical Oxidation
Chlorite Chlorite-Vermiculite Chemical Oxidation
2012/2/13
A IIb orthochlorite (brunsvigite), from the chloritic metabasalt in the Middletown Valley of Maryland, was altered to a regularly interstratified chlorite—vermiculite after four months reaction in sat...