Crystal growth of calcite from calcium bicarbonate solutions at constant PCO2 and 25°C: a test of a calcite dissolution model |
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Authors: | Michael M Reddy LNiel Plummer E Busenberg |
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Institution: | Division of Laboratories and Research, New York State Department of Health, Albany, NY 12201, U.S.A.;U.S. Geological Survey, Reston, VA 22092, U.S.A. |
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Abstract: | A highly reproducible seeded growth technique was used to study calcite crystallization from calcium bicarbonate solutions at 25°C and fixed carbon dioxide partial pressures between 0.03 and 0.3 atm. The results are not consistent with empirical crystallization models that have successfully described calcite growth at low PCO2 (< 10?3 atm). Good agreement was found between observed crystallization rates and those calculated from the calcite dissolution rate law and mechanism proposed by Plummer et al. (1978). |
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