Fig. 7
From: Formation mechanisms of ringwoodite: clues from the Martian meteorite Northwest Africa 8705
BSE images of the granular ringwoodite. a A shock-induced melt vein (~ 20 μm in width), cutting through olivine. The regions marked by white boxes “b”, “c”, and “d” are shown in b, c, d, respectively. b Submicron-sized ringwoodite grains embedded in a Si-rich glass (Gl). Note larger ringwoodite grains in the center than those adjacent to the rims. The olivine walls in contact with the vein have been transformed into ringwoodite too. c Similar texture of b. The yellow box shows the position of FIB-slice #3. Two Raman analyses are marked as R5 and R6. d Ringwoodite microlite clusters and an augite in the melt vein. Raman spectrum #4 confirms the augite. Chr chromite; others are the same as above