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

· by · in , , , ,

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.

Related posts (automatically generated):

  1. Calcium-aluminum-rich inclusions with fractionation and unidentified nuclear effects (FUN CAIs): II. Heterogeneities of magnesium isotopes and 26Al in the early Solar System inferred from in situ high-precision magnesium-isotope measurements
  2. MINERALOGY, PETROGRAPHY, AND OXYGEN AND ALUMINUM-MAGNESIUM ISOTOPE SYSTEMATICS OF GROSSITE-BEARING REFRACTORY INCLUSIONS
  3. High-temperature Rims around Calcium-aluminum-rich Inclusions from the CR, CB and CH Carbonaceous Chondrites
  4. High precision nickel isotope measurements of early Solar System materials and the origin of nucleosynthetic disk variabilityOPEN ACCESS 
  5. Cr isotopes in physically separated components of the Allende CV3 and Murchison CM2 chondrites: Implications for isotopic heterogeneity in the solar nebula and parent body processesOPEN ACCESS 
  6. MINERALOGY, PETROGRAPHY, AND OXYGEN ISOTOPIC COMPOSITIONS OF ULTRAREFRACTORY INCLUSIONS FROM CARBONACEOUS CHONDRITES
  7. Calcium-aluminum-rich inclusions with fractionation and unknown nuclear effects (FUN CAIs): I. Mineralogy, petrology, and oxygen isotopic compositions
  8. Petrology and oxygen isotopic compositions of calcium‐aluminum‐rich inclusions in primitive CO3.0‐3.1 chondrites
  9. A petrologic and microstructural study of a compact type A calcium-aluminum-rich inclusion from the Northwest Africa 5028 CR2 chondrite: Implications for nebular and parent-body processes
  10. Crystal growth and disequilibrium distribution of oxygen isotopes in an igneous Ca-Al-rich inclusion from the Allende carbonaceous chondriteOPEN ACCESS 
Tags: , ,