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Composition changes in a basalt melt contained in a wire loop of Pt80Rh20: effects of temperature, time, and oxygen fugacity

Published online by Cambridge University Press:  05 July 2018

Colin H. Donaldson
Colin H. Donaldson*
Affiliation:
Department of Geology, University of St. Andrews, Fife KY16 9ST, Scotland
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Summary

Losses of FeO, Na2O, and K2O from an alkali olivine basalt melted above the liquidus temperature in Pt80Rh20 wire loops are reported as a function of temperature, time, and PO2. Increasing temperature and decreasing PO2 increase the losses. Compared to open capsules the wire-loop container reduces FeO loss to a minimum but may exacerbate Na2O loss. Nonetheless for most types of experiment involving melt these losses are acceptable.

Type
Research Article
Information
Mineralogical Magazine , Volume 43 , Issue 325 , March 1979 , pp. 115 - 119
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1979

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