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Updated: May 23, 2026

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions
Published on: June 13, 2015
Barium isotope fractionation during experimental formation of the double carbonate BaMn[CO3](2) at ambient
Michael E Böttcher1, Patrizia Geprägs, Nadja Neubert
1Geochemistry & Stable Isotope Geochemistry Group, Marine Geology Section, Leibniz Institute for Baltic Sea Research (IOW), Warnemünde, Germany. michael.boettcher@io-warnemuende.de
Abstract:
In this study, we present the first experimental results for stable barium (Ba) isotope ((137)Ba/(134)Ba) fractionation during low-temperature formation of the anhydrous double carbonate BaMn[CO(3)](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.
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