The trace element chemistry of the metal in IAB iron meteorites.

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Iron Meteorites: Trace Elements, Iron Meteorites: Chemistry

Scientific paper

Metal grains from a silicate inclusion in Landes, a group IAB iron-meteorite, were separated and analyzed for 14 siderophile elements. The same 14 elements were determined in matrix metal from Landes, 5 other IAB meteorites and three anomalous iron meteorites. Compared to the other samples and to chondritic metal, the inclusion metal is enriched in siderophile elements. In chondritic metal, the siderophile element contents are higher when Fe0 is oxidized to FeO. Silicates in IAB inclusions contain little FeO, yet the metal is as rich in siderophile elements as the most oxidized chondrites.

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