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Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
Surface sites drive Fe enrichment at reactive olivine interfaces
Ming Geng1,2, Kunfeng Qiu1, Jun Deng1
1School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China. minggeng@cugb.edu.cn.
None:
Calculations based on density functional theory and statistical mechanics reveal how Fe site preference in olivine is altered at interfaces. Although the M1 site is favored in bulk olivine, surface metal sites provide greater stabilisation for high-spin Fe2+. This enrichment accounts for the enhanced reactivity of olivine interfaces towards dissolution, carbonation and catalysis.
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