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Figure 2
(a) Unit-cell contents of grossular (Ca: yellow balls, Al: gray balls, Si: orange balls, and O: red balls). (b) Graphical representation of the first-layer AlO6 and SiO4 polyhedra in the grossular crystal structure. (c) The thick horizontal blue bar illustrates confidence intervals (the average value ±3 sample standard deviations) of the parameter a at ambient conditions (the upper line) and 1 GPa (the bottom line). The thin-green vertical bars indicate the average value of the a parameter of ten measurements. The thin red vertical bars indicate the particular values for Exp_Amb (upper part) and Exp_1GPa (lower part).

IUCrJ
Volume 7| Part 3| May 2020| Pages 383-392
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520001955