The kinetics of dissolution of dolomite in CO2-H2O systems at 1.5 to 65°C and O to 1 atm PCO2

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Authors:Busenberg, Eurybiades; Plummer, L. Niel
Author Affiliations:Primary:
U. S. Geol. Surv., Reston, VA, United States
Volume Title:American Journal of Science
Source:American Journal of Science, 282(1), p.45-78. Publisher: Kline Geology Laboratory, Yale University, New Haven, CT, United States. ISSN: 0002-9599
Publication Date:1982
Note:In English. 34 refs.; illus. incl. 8 anal., 5 tables
Summary:Weight loss measurements at different T and PCO2 during experimental investigations of the dissolution kinetics of eight samples of dolomite permitted recognition of a two-stage process. During the first stage, which is brief, the surface composition of the dolomite becomes enriched with the MgCO3 component and the CaCO3 component dissolves faster. In the second and more important stage both components of the solid are released stoichiometrically, described quantitatively by three parallel consecutive forward reactions and one significant backward reaction. Dissolution rates are apparently more dependent on crystallographic order than on compositional variations. [M.S.]
Subjects:Aqueous solutions; Carbon dioxide; Carbonate ion; Carbonates; Diagenesis; Dolomite; Experimental studies; Geochemistry; Hydrothermal conditions; Kinetics; Minerals; P-T conditions; PH; Phase equilibria; Processes; Solution; Thermodynamic properties; Water; CO<2`-H<2`O; Reactions
Abstract Numbers:83M/0393
Record ID:1982029702
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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