Chemical Composition of Newly Collected Antarctic Nakhlites, Y000593 and Y000749

Mathematics – Logic

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Antarctic Regions, Chemical Composition, Nakhlites, Rare Gases, Snc Meteorites, Chassignites, Neutron Activation Analysis, Gamma Rays, Chlorine, Hydrogen

Scientific paper

Y000593 and a possibly paired meteorite Y000749 are grouped into nakhlites, a group of SNC meteorites, by their noble gas compositions. They are the first nakhlite recovered on Antarctica. So far about 30 SNC meteorites (shergottite, nakhlite and chassignite) have been identified, most of which are classified into shergottites. Nakhlites are rare, to which 6 meteorites including Y000593 and Y000749 belong. In this study, we have analyzed Y000593, Y000749 and Nakhla for their bulk chemical compositions by nuclear analytical methods. At the Antarctic meteorite symposium at NIPR of this year, we I reported some preliminary results. We have being continuing a suit of analyses and their results are presented in this workshop.

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