On the Nature of Oxygen Isotope Heterogeneity of Igneous Calcium-Aluminum-Rich Inclusions in CV (Vigarano-Type) Carbonaceous Chondrites
Melilite, anorthite, Ti-rich fassaite, perovskite, and davisite in the Allende igneous CAIs experienced postcrystallization mineralogically controlled O-isotope exchange with the external 16O-poor reservoir (Δ17O ~ −3‰), most likely aqueous fluid.
84th Annual Meeting of the Meteoritical Society
- Pub Date:
- August 2021