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Carbon, Hydrogen, and Nitrogen Isotopic Composition of the Renazzo and Orgueil Organic Components

Robert, F. and Epstein, S. (1980) Carbon, Hydrogen, and Nitrogen Isotopic Composition of the Renazzo and Orgueil Organic Components. Meteoritics, 15 (4). p. 355. ISSN 0026-1114. https://resolver.caltech.edu/CaltechAUTHORS:20140903-133313827

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Abstract

The concentration and isotopic composition were determined for carbon, nitrogen, and hydrogen extracted from bulk samples and acid (HF-HCl) residues of Orgueil and Renazzo meteorites. The samples were heated step-wise and the measured quantities of gasses given off at each step were analyzed mass spectrometically. The whole rock δD and δ^(15)N values are +930‰ and + 190‰ for Renazzo and + 170‰ and + 40‰ for Orgueil respectively. Hydrogen concentrations from the acid residues, shows a bimodal release pattern at temperatures between 400 and 1300 ºC and the average δD of hydrogen from the acid residues from Renazzo is + 2500‰ and from Orgueil is + 1100‰. The δD of the hydrogen released at the high temperature release mode is on the average of + 1500‰ for Orgueil and + 3100‰ for Renazzo. The low temperature-release-hydrogen has a δD value of+ 1000‰ for Orgueil and +2000‰ for Renazzo. These results imply that the hydrogen isotopic composition is not homogeneously distributed among the various compounds of the acid residues. The δ^(13)C of the carbon in the acid residues measured -20‰ for Renazzo and -5‰ for Orgueil. With our previous results on δD's acid residues of Murray and Murchison ( +600‰ and +800‰ respectively) we are able to calculate by mass balance an approximate isotopic composition of phyllosilicates in these four meteorites. The δD's of inorganic hydrogen are calculated to be~ -250‰ for Murray, Murchison, and Orgueil.


Item Type:Article
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http://adsabs.harvard.edu/abs/1980Metic..15..355RADSArticle
Additional Information:© 1980 Meteoritical Society. Provided by the NASA Astrophysics Data System.
Issue or Number:4
Record Number:CaltechAUTHORS:20140903-133313827
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140903-133313827
Official Citation:Carbon, Hydrogen, and Nitrogen Isotopic Composition of the Renazzo and Orgueil Organic Components Robert, F.; Epstein, S. Meteoritics, Vol. 15, p.355 Publication Date: 12/1980
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49199
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:03 Sep 2014 23:49
Last Modified:03 Oct 2019 07:11

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