Thallium in meteorites

Details Thallium in meteorites Thallium in meteorites

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994metic..29...85g&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 29, no. 1, p. 85-88

Computer Science

1

Chondrites, Meteoritic Composition, Neutron Activation Analysis, Thallium, Abundance, Bismuth, Rubidium, Meteorites, Thallium, Composition, Iron Meteorites, Stony Meteorites, Chondrites, Laboratory Studies, Spectrometry, Absorption Spectroscopy, Mass Spectroscopy, Abundance, Platinum Group, C Chondrites, Comparison, Ordinary Chondrites, Enrichment, Procedure, Nickel, Catalog, Data, Classification, Geochemistry, Techniques

Scientific paper

Thallium has been quantified in 50 iron meteorites and 6 chondrites using a combination of solvent extraction and graphite furnace atomic absorption spectrometry. The accuracy of the data was checked by analysis of two iron meteorites by laser-excited inductivity coupled plasma (ICP) mass spectrometry. The Tl abundance values for irons appear to be first recorded and show that the Tl content allows for taxonomic separation of several groups on Tl vs. Ni abundance plots. The Tl content of irons is inversely correlated with abundances of platinum group metals such as Ir, Pt, and Rh and, in this respect, behaves like Pd and As that favor sulfur-rich phases in meteorites. Analysis of carbonaceous chondrites showed a 30-fold enrichment of Tl compared with ordinary chondrites.

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