Figure 4

SEM images of polished Opx surfaces after etching with hydrofluoric acid. The straight lines are trenched lamellae of Ca-rich clinopyroxene, exsolved in Opx parallel to (100), formed by selective etching. The dislocations were also etched, showing the location of SGBs in (a). In (b), SGBs with relatively large misfit angles are identified by the sharp bend of the lamellae.