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Fig. 1.

image

Panel a: high-pressure melting temperature obtained for the PPV phase of MgSiO3. Conditions where the simulations equilibrate in the liquid or solid states are indicated as red and blue squares, respectively. Previous theoretical results for the PV and PPV melting temperatures are indicated in the legend. Two-phase results are indicated as TPA. Experimental data in the PV phase are indicated as (Exp.). The shaded area represents the conditions where melting can occur. Panel b: dissociation pathways predicted for MgSiO3 beyond 10 Mbar and high-pressure melting temperatures for the dissociation products SiO2 and MgO.

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