Carrier phases for iodine in the Allende meteorite and their associated Xe-129(r)/I-127 ratios - A laser microprobe study

Details Carrier phases for iodine in the Allende meteorite and their associated Xe-129(r)/I-127 ratios - A laser microprobe study Carrier phases for iodine in the Allende meteorite and their associated Xe-129(r)/I-127 ratios - A laser microprobe study

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988gecoa..52..679k&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 52, March 1988, p. 679-699.

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Allende Meteorite, Iodine Isotopes, Meteoritic Composition, Mineralogy, Xenon 129, Chlorine, Chondrule, Inclusions, Laser Applications, Mass Spectroscopy, Sodalite, Meteorites, Phases, Iodine, Allende, Laser Methods, Microprobe Methods, Xenon 129, Iodine 127, Isotopic Ratios, Cv3 Chondrites, Stony Meteorites, Inclusions, Samples, Meteorite, Laboratory Studies, Carriers, Procedure, Cosmochemistry, Composition, Experiments, Irradiation, Mineralogy, Trapping, Equipment, Diagrams

Scientific paper

This paper presents the results of a study of the carrier phases of iodine in the Allende meteorite and their associated Xe-129(r)/I-127 ratios, obtained using a new high-sensitivity low-blank mass spectrometer coupled with a low-blank laser extraction system. Two types of experiments were performed: a survey of the Xe-129(r) amounts in unirradiated specimens of fine-grained assemblages and individual coarse mineral grains, and a study of the relationship between chlorine and iodine in irradiated samples of the inclusions, in which the Xe-129(r)/I-127 ratios were determined for various minerals. As a by-product of these measurements, the Ar-40/Ar-39 ages were obtained along with some results on trapped Xe components. A schematic diagram of the new mass spectrometer system is included.

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