196Hg and202Hg isotopic ratios in chondrites: revisited |
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Authors: | S. Jovanovic G.W. Reed |
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Affiliation: | 1. Chemistry Division, Argonne National Laboratory, Argonne, Ill. ,USA;2. Enrico Fermi Institute, University of Chicago, Chicago, Ill. USA |
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Abstract: | Additional evidence for an isotopically anomalous Hg fraction in unequilibrated meteorites has been obtained using neutron activation to produce196Hg and202Hg followed by stepwise heating to extract the Hg. In the latest experiments Allende matrix samples released the anomalous Hg but various high-temperature inclusions did not. Nucleogenetic processes are suggested as the probable cause of the anomaly. |
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