The IAB iron-meteorite complex: A group, five subgroups, numerous grouplets, closely related, mainly formed by crystal segregation in rapidly cooling melts
JT Wasson, GW Kallemeyn - Geochimica et Cosmochimica Acta, 2002 - Elsevier
We present new data for iron meteorites that are members of group IAB or are closely
related to this large group, and we have also reevaluated some of our earlier data for these
irons. In the past it was not possible to distinguish IAB and IIICD irons on the basis of their
positions on element-Ni diagrams, but we now show that plotting the new and revised data
yields six sets of compact fields on element-Au diagrams, each set corresponding to a
compositional group. The largest set includes the majority (≈ 70) of irons previously …
related to this large group, and we have also reevaluated some of our earlier data for these
irons. In the past it was not possible to distinguish IAB and IIICD irons on the basis of their
positions on element-Ni diagrams, but we now show that plotting the new and revised data
yields six sets of compact fields on element-Au diagrams, each set corresponding to a
compositional group. The largest set includes the majority (≈ 70) of irons previously …
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