Viscosity of melt of soda melilite composition at high pressure

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Author(s)

    • SUZUKI Akio
    • Department of Earth Science, Graduate School of Science, Tohoku University

Abstract

<p>The viscosity of melt of soda melilite (CaNaAlSi<sub>2</sub>O<sub>7</sub>) composition was measured using the falling sphere method with synchrotron X–ray radiography. This composition of melt was used as a model basalt, because the ratio of the non–bridging oxygen (NBO) and the tetrahedrally coordinated (T) cation is 0.67. We observed a viscosity minimum between 2 and 4 GPa. This finding shows that the partially depolymerized melt (NBO/T = 0.67) has a viscosity minimum under high pressure.</p>

Journal

  • Journal of Mineralogical and Petrological Sciences

    Journal of Mineralogical and Petrological Sciences 114(1), 41-44, 2019

    Japan Association of Mineralogical Sciences

Codes

  • NII Article ID (NAID)
    130007609222
  • Text Lang
    ENG
  • ISSN
    1345-6296
  • Data Source
    J-STAGE 
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