Phase G reported by Ohtani et al.  and Kudoh et al. [1997a] is identical with the new phase D reported by Kuroda and Irifune  and Yang et al. . However, there is ambiguity on existence of phase D defined by Liu . There are following possibilities on existence of Liu's phase D; (1) the product was a mixture of phase G and the other contaminant phases, (2) it realy exists stably in different pressure and temperature conditions from those studied by our works, or (3) the phase is a metastable phase formed due to a short run duration and/or no sealing of water in the diamond anvil cell. Therefore, it is not appropriate to use the name phase D for the dense hydrous magnesium silicate phase G reported by us [Ohtani et al., 1997].
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)