beta -Mg2 SiO4; a potential host for water in the mantle?

JR Smyth - American Mineralogist, 1987 - pubs.geoscienceworld.org
Electrostatic potentials and Pauling bond strengths have been calculated for a group of oxygen
and hydroxyl sites in high-pressure silicate and oxide phases. The O1 position in β-Mg 2 …

Phase transformations in descending plates: implications for mantle dynamics and differentiation

AE Ringwood - The Geophysics of the Pacific Ocean Basin and …, 1976 - Wiley Online Library
… transform to a new garnet structure characterized by partial octahedral coordination of
silicon, while near 400 km, olivine transforms to a polymorph possessing the betaMg, SiO4

Thermoelasticity of phase D and implications for low-velocity anomalies and local discontinuities at the uppermost lower mantle

S Hao, D Yang, W Wang, F Zou… - American …, 2024 - pubs.geoscienceworld.org
The distribution of water reservoirs in the deep Earth is critical to understanding geochemical
evolution and mantle dynamics. Phase D is a potential water carrier in the slab subducted …