Catalysis, inhibition, and the calcite-aragonite problem; [Part] 1, The aragonite-calcite transformation

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ID: 292828
1968
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Abstract
The kinetics of the aragonite-calcite transformation were studied in aqueous solution to determine the factors involved in the process of calcite crystallization and the controlling diagenetic conditions for the aragonite-calcite transformation. The reaction involved the solution and equilibration of aragonite with the solution and the subsequent nucleation and growth of calcite. The extent of reaction was determined by X-ray diffraction. Data suggest that calcite nucleation occurs on aragonite surface, whereas growth occurs on point or line defects. Catalysis by CO ~2~ , CaCl ~2~ , and inhibition by KOH indicate a fundamental reaction involving Ca (super ++) and HCO ~3~ (super -) . Calcite crystallization is strongly inhibited by Mg (super ++) and less so by SO ~4~ (super \--) .
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Authors James L. Bischoff, W. S. Fyfe
Journal american journal of science
Year 1968
DOI
10.2475/ajs.266.2.65
URL
https://ajs.scholasticahq.com/article/59220.pdf
Keywords Keywords not found

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