Université de Fribourg

Barium isotope fractionation during experimental formation of the double carbonate BaMn[CO₃]₂ at ambient temperature

Böttcher, Michael E. ; Geprägs, Patrizia ; Neubert, Nadja ; Allmen, Katja von ; Pretet, Chloé ; Samankassou, Elias ; Nägler, Thomas F.

In: Isotopes in Environmental and Health Studies, 2012, p. -

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...