Figure 5
SiO2 phase diagram, modified after18,26,47. Shown is experimental data where the structure of SiO2 was resolved. Indicated are the different equilibrium phase stability fields and the geotherms of Earth and terrestrial planets with a mass of 10 ME. Red diamonds are data from this study and the dashed magenta line indicates the Sesame stishovite EOS 736050. Shown is data with quartz or fused silica as a starting material: black and grey squares from2, circles from10, right triangles from12, lower triangles from15 and stars from17 as well as stishovite as a starting material: white squares4, upper triangles27, crosses34 and left triangles28. Furthermore melting lines are indicated: brown26, orange51, pink52, blue53, green54 and light blue55,56.
