2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 15 - Sep 19, 2021Online
2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 15 - Sep 19, 2021Online
[R2-09]Crystallization of Cristobalite and Tridymite in a CaO-MgO-Li2O-V2O5 Flux System: Isothermal Heating Experiments of Amorphous Silica
*Toshiya Abe1(1. Yamaguchi Univ. Sci)
Keywords:
synthesis,flux,amorphous silica,tridymite,cristobalite
At the 2019 annual meeting, we reported tridymite and cristobalite crystalize from amorphous silica in the flux system CaO-MgO-Li2O-V2O5. The detailed conditions, however, were not clear. In this study, we have focused the growth condition of cristobalite and tridymite for using amorphous silica. At temperatures from 900 to 800ºC, cristobalite crystallizes preferentially and tridymite subsequently. Tridymite, however, is dominant for prolonged heating and/or at higher temperature.