Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-29T17:11:39.849Z Has data issue: false hasContentIssue false
  • English
  • Français

Dissolution rates of crystalline basalt at pH 4 and 10 and 25-75°C

Published online by Cambridge University Press:  05 July 2018

S. Gudbrandsson ,
D. Wolff-Boenisch ,
S. R. Gíslason  and
E. H. Oelkers
S. Gudbrandsson*
Affiliation:
Institute of Earth Science, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
D. Wolff-Boenisch
Affiliation:
Institute of Earth Science, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
S. R. Gíslason
Affiliation:
Institute of Earth Science, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
E. H. Oelkers
Affiliation:
Institute of Earth Science, University of Iceland, Sturlugata 7, 101 Reykjavik, Iceland
*
*E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Far-from-equilibrium dissolution rates of crystalline basalt were measured in a mixed-flow reactor at pH 4 and 10, and at temperatures from 25 to 75ºC. The material used was obtained from a dyke on Stapafell Mountain on Reykjanes peninsula in Iceland because of its similarity with previous experiments on dissolution rates on basaltic glass by Oelkers and Gislason (2001) and Gislason and Oelkers (2003). Comparison of dissolution rates of basaltic glass and of crystalline basalt of similar chemical composition (from Gislason and Oelkers, 2003) indicates lower rates for crystalline material.

Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 155 - 158
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Gislason, S.R. and Eugster, H.P. (1987) Meteoric water-basalt interactions. I: A laboratory study. Geochimica et Cosmochimica Acta, 51, 2827–2840.Google Scholar
Gislason, S.R. and Oelkers, E.H. (2003) Mechanism, rates, and consequences of basaltic glass dissolution: II. An experimental study of the dissolution rates of basaltic glass as a function of pH and temperature. Geochimica et Cosmochimica Ada, 67, 3817–3832.CrossRefGoogle Scholar
Oelkers, E.H. and Gislason, S.R. (2001) The mechanism, rates, and consequences of basaltic dissolution: I. An experimental study dissolution rates of basaltic glass as a function of aqueous Al, Si and oxalic acid concentration at 25°C and pH = 3 and 11. Geochimica et Cosmochimica Ada, 65, 3671–3681.Google Scholar
Parkhurst, D.L. and Appelo, C.A.J. (1999) User's guide to PHREEQC (Version 2) - A computer program for speciation, batch-reaction, one-dimensional transport and inverse geochemical calculations. . US Geological Survey Water Resources Investigations Report 99–4259. U. S. Geological Survey, Denver, 312 pp.Google Scholar
Wolff-Boenisch, D., Gislason, S.R., Oelkers, E.H. and Putnis, C.V. (2004) The dissolution rates of natural glasses as a function of their composition at pH 4 and 10.6, and temperatures from 25 to 74°C. Geochimica et Cosmochimica Acta, 68, 4843–4858.CrossRefGoogle Scholar
Wolff-Boenisch, D., Gislason, S.R. and Oelkers, E.H. (2006) The effect of crystallinity on dissolution rates and CO2 consumption capacity of silicates. Geochimica et Cosmochimica Acta, 70, 858–870.CrossRefGoogle Scholar