Barium isotope fractionation during experimental formation of the double carbonate BaMn[CO 3 ] 2 at ambient temperature
|Published in||Isotopes in Environmental and Health Studies. 2012, p. 1-7|
|Abstract||In this study, we present the first experimental results for stable barium (Ba) isotope (137Ba/134Ba) fractionation during low-temperature formation of the anhydrous double carbonate BaMn[CO3]2. This investigation is part of an ongoing work on Ba fractionation in the natural barium cycle. Precipitation at a temperature of 21±1°C leads to an enrichment of the lighter Ba isotope described by an enrichment factor of−0.11±0.06‰ in the double carbonate than in an aqueous barium-manganese(II) chloride/sodium bicarbonate solution, which is within the range of previous reports for synthetic pure BaCO 3 (witherite) formation.|
|Keywords||ambient temperature — barium-134 — barium-137 — barium-manganese(II) double carbonate — isotope effects — precipitation experiment|
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|Research group||Sedimentology, Biostratigraphy and Micropaleontology|
|BÖTTCHER, Michael E. et al. Barium isotope fractionation during experimental formation of the double carbonate BaMn[CO 3 ] 2 at ambient temperature. In: Isotopes in Environmental and Health Studies, 2012, p. 1-7. doi: 10.1080/10256016.2012.673489 https://archive-ouverte.unige.ch/unige:19409|