Back-scattered electron images of sample CD2H3 (A), (B). The rectangle zone in A enlarged to show coexisting minerals and interstitial melt in light gray, and (C) the rectangle zone in B enlarged to show cpx rims around small opx. Abbreviations used: Ol olivine, Opx orthopyroxene, Cpx clinopyroxene, and Melt quenched melt. The white part is the metal capsule noted as Fe-AuPd, i.e. AuPd pre-saturated in Fe. In the outer capsule, recrystallized olivine is visible. Mineral grains have >30-μm diameter, which is appropriate for SIMS measurements. The smallest opx has quench growth cpx around them (C). For analysis, we only used the largest opx (>50 μm) showing no cpx rims around them. Dendritic textures are observed as a boundary layer between crystallized areas and the melt pool. Except for this dendritic boundary, the melt is perfectly quenched.