Articles | Volume 12, issue 2
Research article
18 Feb 2021
Research article |  | 18 Feb 2021

Quartz dissolution associated with magnesium silicate hydrate cement precipitation

Lisa de Ruiter, Anette Eleonora Gunnæs, Dag Kristian Dysthe, and Håkon Austrheim

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Cited articles

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Anderson, J. G., Doraiswamy, L. K., and Larson, M. A.: Microphase-assisted “autocatalysis” in a solid-liquid reaction with a precipitating product - II. Experimental, Chem. Eng. Sci., 53, 2459–2468, 1998b. 
Baldermann, A., Mavromatis, V., Frick, P. M., and Dietzel, M.: Effect of aqueous Si/Mg ratio and pH on the nucleation and growth of sepiolite at 25 C, Geochim. Cosmochim. Ac., 227, 211–226,, 2018. 
Beinlich, A. and Austrheim, H.: In situ sequestration of atmospheric CO2 at low temperature and surface cracking of serpentinized peridotite in mine shafts, Chem. Geol., 332–333, 32–44,, 2012. 
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Short summary
In this work, the formation of natural magnesium silicate hydrate cement has been studied. The cement forms through the extraordinarily fast dissolution of quartz under high-pH, Mg-rich conditions that occur in south-east Norway where an ultramafic body is exposed. We studied the cemented rocks and the processes that led to the formation of the cement from the field scale to the nanoscale. Magnesium silicate hydrate cement might be a low-CO2 alternative to Portland cement.