Fig. 2: The crystal structure evolution of hydrous aluminosilicates under mantle transition zone conditions. | Nature Communications

Fig. 2: The crystal structure evolution of hydrous aluminosilicates under mantle transition zone conditions.

From: High-temperature structural disorders stabilize hydrous aluminosilicates in the mantle transition zone

Fig. 2

(a) Topaz-OH, (b) phase Psi, and (c) phase Egg. The solid symbols represent disordered crystal structures, while the open symbols represent ordered crystal structures. Blue square: Topaz-OH I, Wunder et al.32; Black square: Topaz-OH I, Xue et al.25; Blue circle: Topaz-OH II, Xue et al.25; Black diamond: the Al endmember of phase D, Pamato et al.27; Black hexagon: phase Egg, Schmidt et al.33; Blue hexagon: phase Egg, Schulze et al.67; Red symbols: this study. The shaded regions indicate the order-to-disorder transition boundaries. The orange and olivine curves represent normal mantle and cold slab geotherms, respectively68.

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