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Determination of lead isotopic composition of a grain from the allende carbonaceous chondrite by LAMMA

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Abstract

The attempt of this work is to use the LAMMA, a newly developed modern micro-beam analytical technique, to determine the lead isotopic composition of some grains picked out from the white aggregate in the Allende (C3V) carbonaceous chondrite. The experimental results show that the Pb/Pb model age of the Allende calculated on the basis of the206Pb/207Pb ratio is 4.56 ±0.008 b. y., just in agreement with the values reported in literature. The LAMMA provides a new and powerful tool in the analytical arsenal dealing with trace elements and isotopic compositions, due to its high sensitivity, rapid performence and good space resolution.

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Authors and Affiliations

  1. Institute of High Energy Physics, Academia Sinica, China

    Zhifang Cai

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  1. Zhifang Cai
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Cai, Z. Determination of lead isotopic composition of a grain from the allende carbonaceous chondrite by LAMMA. Geochemistry 3, 167–171 (1984). https://doi.org/10.1007/BF03179292

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