Here's a new one for those of you who are interested in the Chicxulub crater. Earth and planetary science letters. MAY 01 1995 v 132 n 1 / 4 Kyte, F.T. Bostwick, J.A. Magnesioferrite spinel in Cretaceous/Tertiary boundary sediments of the Pacific basin: Remnants of hot, early ejecta from the Chicxulub impact? Page: 113 -Mikiel