Journal of Mineralogical and Petrological Sciences
Online ISSN : 1349-3825
Print ISSN : 1345-6296
ISSN-L : 1345-6296
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Viscosity of K2TiSi4O11 melt at high pressure
Akio SUZUKI
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2019 Volume 114 Issue 6 Pages 280-283

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Abstract

The viscosity of alkali titanosilicate melt with a composition of K2TiSi4O11 (KTS4) was measured at pressures up to of 7.41 GPa and temperatures up to of 2133 K. The aim of this study is to determine the effect of pressure on the viscosity change and to estimate the relation between structural change and the viscosity change under high pressures. The viscosity decreased up to 3.30 GPa, whereas it increased from 3.30 to 7.41 GPa. The viscosity change above 3.30 GPa is likely caused by the dominance of six–fold coordinated titanium.

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© 2019 Japan Association of Mineralogical Sciences
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