@article{Verch2012Mixed-22633,
  year={2012},
  doi={10.1524/zkri.2012.1529},
  title={Mixed calcium-magnesium pre-nucleation clusters enrich calcium},
  number={11},
  volume={227},
  issn={2194-4946},
  journal={Zeitschrift für Kristallographie - Crystalline Materials},
  pages={718--722},
  author={Verch, Andreas and Antonietti, Markus and Cölfen, Helmut}
}

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    <dc:language>eng</dc:language>
    <dc:creator>Cölfen, Helmut</dc:creator>
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    <dc:contributor>Verch, Andreas</dc:contributor>
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    <dcterms:title>Mixed calcium-magnesium pre-nucleation clusters enrich calcium</dcterms:title>
    <dc:creator>Verch, Andreas</dc:creator>
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    <dc:creator>Antonietti, Markus</dc:creator>
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    <dcterms:issued>2012</dcterms:issued>
    <dcterms:bibliographicCitation>Zeitschrift für Kristallographie - Crystalline Materials ; 227 (2012), 11. - S. 718-722</dcterms:bibliographicCitation>
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    <dcterms:abstract xml:lang="eng">It is demonstrated that magnesium and carbonate ions can form pre-nucleation clusters in analogy to calcium carbonate. If a mixed calcium and magnesium solution is brought in contact with carbonate ions, mixed pre-nucleation clusters form. The equilibrium constants for their formation are reported revealing that over the entire range of possible cation mixing ratios, calcium gets enriched over magnesium in the pre-nucleation clusters. This can explain high magnesium contents in amorphous calcium carbonate. However, this enrichment alone is not sufficient to explain the magnesium content of less than 41 mol% which is found in magnesium calcite biominerals nucleated from seawater.</dcterms:abstract>
    <dc:contributor>Antonietti, Markus</dc:contributor>
    <dc:contributor>Cölfen, Helmut</dc:contributor>
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