Re-examination of water solubility in albite melt

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doi: 10.2183/pjab.71.121
Authors:Miyagi, Isoji
Author Affiliations:Primary:
Tokyo Institute of Technology, Tokyo, Japan
Volume Title:Proceedings of the Japan Academy. Series B: Physical and Biological Sciences
Source:Proceedings of the Japan Academy. Series B: Physical and Biological Sciences, 71(4), p.121-125. Publisher: Japan Academy, Tokyo, Japan. ISSN: 0386-2208
Publication Date:1995
Note:In English. 11 refs.; illus.
Summary:Most of the previously determined water solubilities in silicate melts were overestimated because of an experimental quenching problem. Hydration of run product glass with coexisting aqueous bubbles casued the overestimation. Due to relatively slow quenching rate in conventional IHPVs, hydration of the glass by trapped aqueous bubbles inevitably takes place at a significant speed. A new method for the solubility determination is proposed by which the hydration problem can be avoided. Using a new IHPV with rapid quenching device and utilizing intensive mapping analysis of water for the experimental charges with SIMS, solubility of water was newly determined for albite melt at 2000 bar. The solubility obtained was 10-30 % lower than those previously reported. Because the water solubility data for albite melt have been used as standard reference in silicate melt literatire, the present observation has pivotal importance. [Authors' abstract] [I.S.]
Sections:Experimental mineralogy
Subsections:General
Subjects:Albite; Bubbles; Degassing; Experimental studies; Feldspar group; Framework silicates; High pressure; High temperature; Hydration; Ion probe data; Magmas; Mass spectra; Melts; Phase equilibria; Plagioclase; Pressure; Quenching; Silicate melts; Silicates; Solubility; Spectra; Temperature; Water
Abstract Numbers:98M/3692
Record ID:2016021171
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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