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Oxygen isotopic compositions of individual minerals from the Vigarano CAI Big Guy. The data are plotted on an oxygen three-isotope diagram (δ17O vs. δ18O) in (a) and as deviations from the terrestrial fractionation line (Δ17O) in (b). The terrestrial fractionation (TF) and carbonaceous chondrite anhydrous mineral (CCAM) lines are shown for reference.
