Fig. 1: Occurrences of ringwoodite, ahrensite and tuite.

a BSE image of ringwoodite in contact with the longest shock-induced melt vein. b BSE image of ahrensite and tuite near the melt vein. c Raman spectra of various minerals. d Lamellar ahrensite near the melt vein. e BSE image of ahrensite + vitrified bridgmanite in the melt vein. Rwt ringwoodite, Ol olivine, Ahr ahrensite, Fa fayalite, Msk maskelynite, Brg G bridgmanite glass. Yellow markers (e.g., E35) indicate the positions of EPMA measurements. White lines indicate the boundaries of the melt veins.