Cr Isotopic Abundances

We have developed techniques for the chemical separation and isotopic analysis of Cr in silicates and spinels. The purpose is to pursue the evidence for correlated isotopic effects in Ca-AI-rich inclusions (CAl) for elements in the vicinity of the Fe-abundance peak. Such a correlation is most striking for Ca and Ti for the FUN inclusions EK-1-4-1 and C-1 (Lee eta/., 1978; Niederer et al., 1980)