Isotropic quartz aggregate prepared using a sol-gel method

Hisashi Imoto, Katsuyoshi Michibayashi, Tomohiro Oouchi, Michihiko Nakamura

Research output: Contribution to journalArticlepeer-review


Synthetic quartz aggregates as a starting material for high-temperature/ high-pressure deformation experiments were prepared using a high-temperature/high-pressure apparatus, Silica gel was prepared using a sol-gel method and subsequently dried and heated in air for three days at temperatures between 700 and 1000°C. Various sets of the gels were then packed into Pt-Ni capsules with 0-2 wt% water and were sintered to form quartz aggregates at 800°C and 1 GPa for 5 hours. As a result, synthetic quartz aggregates with polygonal textures and very weak crystallographic preferred orientations were formed from a 1:4 mixture of two silica gels dried at 700°C and 1000°C, respectively.

Original languageEnglish
Pages (from-to)45-54
Number of pages10
JournalGeoscience Reports of the Shizuoka University
Issue number35
Publication statusPublished - 2008 Jul


  • Annealing experiment
  • Isotropic texture
  • Quartz
  • Silica gel
  • Starting material


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