Fig. 7From: The role of hydrogen bonds in hydrous minerals stable at lower mantle pressure conditionsThe calculated and experimental velocities (Tsuchiya and Tsuchiya 2009; Mashino et al. 2016) of \(\delta\)-AlOOH. Dashed lines indicate the pressure conditions where symmetry change (9 GPa) and hydrogen bond symmetrization (18 GPa) were observed experimentally (Sano-Furukawa et al. 2008, 2018)Back to article page