Volatiles play a central role in many magmas, changing melt structure, liquidus phase relationships, and the physical properties of melts. Separation of volatiles from magmas by formation of a fluid phase is the critical process in many volcanic eruptions and may play that role in formation of some ore-forming fluids. We have separated the discussion of experiments involving melt-fluid interaction into a separate chapter because many of the techniques are quite different from those used in crystal-liquid experiments. The objectives in the experiments described here are to provide data for thermodynamic models of volatiles in melts and to determine element partitioning between melts and fluids.
KeywordsRare Earth Element Aqueous Fluid Aqueous Chloride Solution Gravimetric Balance Perforated Capsule
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