Figure 4: Structural details of hemleyite.
From: Discovery of the Fe-analogue of akimotoite in the shocked Suizhou L6 chondrite

The difference between the O-O edge of the A and B sites (in Angstrom), which is directed along the c-axis, plotted as a function of the ratio between the ionic radius of the B and A cation. Filled circle corresponds to hemleyite (this study), whereas empty circles refer to literature data as follows: FeSiO341, MgSiO338, MnTiO359, FeTiO360, MgTiO361.