Viscosity of the albite melt to 7 GPa at 2000 K

Shohei Mori, Eiji Ohtani, Akio Suzuki

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36 Citations (Scopus)


Viscosity of melt at high pressure provides an important clue to understanding the dynamics of magmas in the Earth's deep interior. We measured viscosity of the albite melt to 7 GPa at 2000 K by the falling sphere method using a single crystalline diamond as a density marker. Viscosity of the melt decreases significantly from 5.28 ± 1.78 Pa s at 3 GPa to 0.90 ± 0.34 Pa s at 5 GPa and 0.99 ± 0.27 Pa s at 6 GPa. We observed a further decrease in viscosity of the melt to 0.28 ± 0.06 Pa s at 7 GPa. The change in viscosity with pressure may suggest existence of some structural change in the albite melt at high pressure. (C) 2000 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalEarth and Planetary Science Letters
Issue number1-2
Publication statusPublished - 2000 Jan 30


  • Albite
  • Density
  • High pressure
  • Silicate melts
  • Viscosity


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