available online at http://meteoritics.org Late accretion and lithification of chondritic parent bodies: Mg isotope studies on fragments from primitive chondrites and chondritic breccias Anna K. SOKOL1, 3*, Addi BISCHOFF1, Kuljeet K. MARHAS2, Klaus MEZGER3, and Ernst ZINNER2 1Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany 2McDonnell Center for the Space Sciences and Ph...