Oxygen, Magnesium, and Aluminum Isotopes in the Ivuna CAI: Re-Examining High-Temperature Fractionations in CI Chondrites

Frank D. R. * Huss G. R. Nagashima K. Zolensky M. E. Le L.

80th Annual Meeting of the Meteoritical Society 2017 [#6355]

abstract (PDF)

“The only whole CAI preserved in the aqueously altered CI chondrites is 16O-rich and has no resolvable radiogenic Mg. Accretion of CAIs by the CI parent object(s) may limit the precision of cosmochemical models that require a CI starting composition.