Eugster, O.; Busemann, H.; Kurat, G.; Lorenzetti, S. and Varela, M. E.
Characterization of the noble gases and CRE age of the D'Orbigny angrite.
In: 65th Annual Meeting of the Meteoritical Society, 21-26 July 2002, Los Angeles, California, USA.
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Introduction: The D’Orbigny angrite, a 16.55 kg stone, was found 1979 in Argentina . Mineralogy and chemistry of this meteorite were characterized in detail [2-6]. A Pb-U-Th age of 4.559 Ga was obtained for pyroxenes by Jagoutz et al. . Here we report results on the noble gas isotopic composition and, in particular, on the cosmic-ray exposure (CRE) age of D’Orbigny.
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