Fig. 2: Oxygen isotopic composition of the weighted average of the seven Ryugu particles (green square) analysed in this study shown in relation to other relevant CC groups.
From: Oxygen isotope evidence from Ryugu samples for early water delivery to Earth by CI chondrites
The figure shows clearly that the Ryugu particles have a mean oxygen isotope composition that is close to that of the CIs (blue diamond), but distinct from the CYs (brown triangles). Data for CIs (Alais, Ivuna and Orgueil) and CYs (B-7904, Y-82162) are given in Table 1. Other data are CO3 chondrites57 (blue circles), CM2 (red squares) and C2 ungrouped (black squares)13,58,59,60,61, along with analyses for Tagish Lake (inverted red triangle) and Sutter’s Mill (pink square) (Supplementary Information). The red line is the best fit line through CM2 (finds and falls) data only. CCAM, CCs anhydrous minerals line13. Value n refers to the number of individual aliquots of material that were independently run on the laser fluorination line for each sample (Table 1).
