Vesicles and amorphous silica by laser irradiated in olivine. Image (a) TEM image of Fa₇₁ -M150mJ containing np-Fe⁰, amorphous silica, and vesicle. Image (b) Fe, (c) Si, and (d) Mg as EDS mapping images in image (a). Image (e) Fa₂₉-P75mJ, (f) Fa₅₀-P5mJ, (g) Fa₇₁ -M150mJ, and (h) Fa100-M150mJ showing features containing np-Fe⁰ and vesicles. Vesicles support the in situ decomposition reaction of olivine. The EDS mapping shows that the area framed by the white dashed curves in Fig. 3a is amorphous silica, which may be residual SiO₂ that originates from synthesizing the Fe-rich olivine samples.