Sumitani_2026

Table 1 Characteristics and size of chondrules from NWA 6991. Table 2 Summary of chondrule characteristics, counts, and SIMS analyses in NWA 6991. Table 3 Mg# and host oxygen isotopic compositions of layered (core, rim, host), barred olivine (BO), dusty olivine chondrules. Table 4 Elemental composition of core, rim, and core+rim (bulk) of layered chondrules. Table S1 Laser fluorination oxygen isotope ratios of olivine and pyroxene standard materials. Table S2 Raw-measured EPMA data. Table S3 O-isotope data of individual minerals.