available online at http://meteoritics.org 53 © Meteoritical Society, 2004. Printed in USA. Enstatite aggregates with niningerite, heideite, and oldhamite from the Kaidun carbonaceous chondrite: Relatives of aubrites and EH chondrites? G. KURAT,1* E. ZINNER,2 F. BRANDSTÄTTER,1 and A. V. IVANOV3 1Naturhistorisches Museum, Postfach 417, A-1014 Vienna, Austria 2Laboratory for Space Sciences and th...