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    Macro- to nanoscale study of the effect of aqueous sulphate on calcite growth

    Access Status
    Fulltext not available
    Authors
    Vavouraki, A.
    Putnis, Christine
    Putnis, Andrew
    Oelkers, E.
    Koutsoukos, P.
    Date
    2008
    Type
    Conference Paper
    
    Metadata
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    Citation
    Vavouraki, A. and Putnis, C. and Putnis, A. and Oelkers, E. and Koutsoukos, P. 2008. Macro- to nanoscale study of the effect of aqueous sulphate on calcite growth, pp. 141-144.
    Source Title
    Mineralogical Magazine
    DOI
    10.1180/minmag.2008.072.1.141
    ISSN
    0026-461X
    School
    Department of Chemistry
    URI
    http://hdl.handle.net/20.500.11937/11291
    Collection
    • Curtin Research Publications
    Abstract

    Calcite growth rates were measured in the presence of sulphate using mixed-flow reactors and in situ Atomic Force Microscopy. Preliminary observations reveal that the kinetics and mechanism of the calcite growth was altered by the presence of sulphate. Calcite growth rates in the presence of sulphate (= 5 mM) were decreased and two-dimensional nuclei tend to grow on top of existing nuclei, rather than spreading. The height of new nuclei was ~4 Å, 1 Å greater than that of pure calcite growth. This difference reflects the incorporation of tetrahedral SO42- anions into the calcite lattice. © 2008 The Mineralogical Society.

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