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Mean olivine and pyroxene (a) Δ17O and (b) δ18O values of individual chondrules. (a) Chondrule means (Δ17O) of olivine and pyroxene (excluding relict olivine) are shown for chondrules that have indistinguishable olivine and pyroxene analyses. Error bars show the propagated uncertainties of the mean values (see Section 2.4. and Tab. 1). (b) Mean olivine δ18O values are slightly higher than those of pyroxene but variations are within propagated uncertainties.
