A trapped nitrogen component in angrites

Abernethy, F. A. J.; Verchovsky, A. B.; Anand, M.; Franchi, I. A. and Grady, M. M. (2012). A trapped nitrogen component in angrites. In: 75th Annual Meeting of the Meteoritical Society, 12-17 Aug 2012, Cairns, Australia.

URL: http://www.lpi.usra.edu/meetings/metsoc2012/pdf/52...


Angrites are a small group of silica undersaturated achondrites notable for their apparent lack of shock features or brecciation and their characteristic unusual mineralogy. We are interested in studying their magmatic history, as reflected by their light-element chemistry. Here, we report on the abundance, distribution and isotopic composition of nitrogen in a suite of 5 angrites. We employed the technique of stepped oxidation, which has previously been used to determine the nitrogen chemistry of a variety of meteoritic and terrestrial rocks.

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