The relationship between IIE irons and H chondrites: petrologic and oxygen isotope constraints

McDermott, K. H.; Greenwood, R. C.; Franchi, I. A.; Anand, M. and Scott, E. R. D. (2011). The relationship between IIE irons and H chondrites: petrologic and oxygen isotope constraints. In: 74th Annual Meeting of the Meteoritical Society, 8-12 Aug 2011, London, UK.

URL: http://www.lpi.usra.edu/meetings/metsoc2011/pdf/54...

Abstract

Introduction: Silicate inclusions have been observed in about half of all currently identified IIE irons (21 specimens). Based mainly on their similar oxygen isotope compositions, a genetic relationship between the IIE irons and H chondrites had been proposed. However, this relationship was subsequently questioned due to the limited overlap between laser fluorination data for equilibrated H chondrites and the earlier IIE silicate data. We are undertaking a detailed oxygen isotope and geochemical study of both the IIE silicate inclusions and H chondrites, with the aim of investigating further the relationship between the two groups.

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