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Progress in Earth and Planetary Science
Fig. 4 | Progress in Earth and Planetary Science

Fig. 4

From: Back-transformation processes in high-pressure minerals: implications for planetary collisions and diamond transportation from the deep Earth

Fig. 4

Back-scattered electron (BSE) images showing back-transformation microstructures in ringwoodite. a Polycrystalline microstructure of the starting material (ringwoodite). b Fine-grained olivine (darker regions indicated by white arrows) forms reaction rims along grain boundaries of parental ringwoodite grains in the partially back-transformed sample recovered at 1.2 GPa and 645 °C (Run M2893). c Polycrystalline olivine after the completion of the back-transformation at 6.6 GPa and 800 °C (Run M2096)

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