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Laser Raman spectroscopic measurements of water in unexposed glass inclusions
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A method is proposed for determining the water concentration in silicate melt inclusions (MI) by confocal rnicro-Raman spectroscopy, Without exposing the inclusions for measurements (a prerequisite of all previous methods). The latter is important for extremely water-rich MI (e.g., those in evolved granites and pegmatites), which would loose H2O on exposure. Furthermore, this technique permits determination of the water concentration in it single MI. We use a comparative technique, determining the total water content of a sample against a reference glass of known water content. Because this process is non-destructive it does not preclude the subsequent use of other analytical techniques.
|Keywords:||raman spectroscopy; water determination; unexposed silicate melt inclusions; water in glasses; melt inclusions; rhyolitic glasses; H2O|
|Journal or Publication Title:||American Mineralogist|
|Page Range:||pp. 467-470|
|Identification Number - DOI:||10.2138/am.2006.2107|
|Date Deposited:||10 Aug 2006|
|Last Modified:||18 Nov 2014 03:11|
|Item Statistics:||View statistics for this item|
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