Mineral chemistry and structure
Many mineral properties are controlled by composition and structure. It is therefore essential to study the chemistry and structures of mantle minerals. We synthesize high-quality samples, using which their chemistry and structures are investigated.
Past studies
- Bridgmanite
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- Oxygen vacancy substitution mechanism linked to ferric iron in bridgmanite with pressure [Fei et al., 2021]
- Bridgmanite is nearly dry at the top lower mantle [Liu et al, 2021]
- Oxygen vacancy substitution linked to ferric iron in bridgmanite at 27 GPa [Fei et al., 2020]
- Aluminum solubility in bridgmanite up to 3000 K at the top lower mantle [Liu et al., 2020]
- Increase of the oxygen vacancy component in bridgmanite with temperature [Liu et al., 2019a]
- Strong correlation of oxygen vacancy in bridgmanite with Mg/Si ratio [Liu et al., 2019b]
- Oxygen vacancy ordering in aluminous bridgmanite in the Earth’s lower mantle [Grüninger et al., 2019]
- Maximum Al2O3 contents as a function of P and T [Liu et al., 2017]
- P-dependence of MgAlO2.5 contents [Liu et al., 2017]
- H2O
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- High H2O solubility in ringwoodite [Fei et al., 2020]
- H+ substituion mechanism in Fo [Fei and Katsura, 2020]
- Others