Mg Isotopic measurements in fine-grained Ca-AI-rich inclusions

Abstract

A study of the Mg isotopic composition and mineralogy of fine-grained, Ca-Al-rich inclusions has been initiated, to search for isotope fractionation and for excess ^(26)Mg^* due to the decay of ^(26)Al. It is important to establish whether there is evidence, in these inclusions, of isotopic heterogeneity, whether ^(26)Mg^* is correlated with AI/Mg, and whether there is a correlation of the isotopic effects with mineralogy.

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