Figure 8.

The O isotopic compositions of magnetite, dolomite, olivine and low-Ca pyroxene grains and the bulk values for Ryugu particles. δ¹⁷O' = ln(δ¹⁷O* + 1) where δ¹⁷O* = δ¹⁷O + 0.033 × 10⁻³, and δ¹⁸O' = ln(δ¹⁸O + 1). Compiled data for carbonaceous chondrites (CC) are from the literature.^190–194) Data for host olivines in chondrules and olivine fragments in CC are from previous studies,^194–196) data for relict olivine in CC chondrules are from the literature,^197,198) and data for AOA are from a previous study.¹⁹⁹⁾ The error bar for bulk analysis values is 2SD. CCAM and TSFL denote carbonaceous chondrite anhydrous mineral line²⁰⁰⁾ and terrestrial silicate fractionation line.²⁰¹⁾ TL is Tagish Lake (C2 ungrouped).