Abstract
The viscosity of melt of soda melilite (CaNaAlSi 2 O 7 ) 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.
Original language | English |
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Pages (from-to) | 41-44 |
Number of pages | 4 |
Journal | Journal of Mineralogical and Petrological Sciences |
Volume | 114 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2019 |
Keywords
- Aluminosilicate melt
- Magma
- Soda melilite
- Viscosity
- X-ray radiography
ASJC Scopus subject areas
- Geophysics
- Geology