Henríquez et al. (2026): Fluid–rock interaction experiments on basaltic volcanic rocks at 90 bar and 50 °C for potential carbon storage in Patagonia, Chile

Carolina Henríquez, Klebson C. Silva, Luis Mancini, Paulo Quezada, Mauricio Calderón, Leonardo Fadel Cury, Anelize Bahniuk, IN: International Journal of Greenhouse Gas Control, https://doi.org/10.1016/j.ijggc.2026.104659

The rise in atmospheric CO₂ demands the need for scalable carbon removal strategies. Carbon capture and storage (CCS) through mineralization in Ca- and Mg-rich basalts represents a robust and long-term approach for permanently sequestering CO₂ as stable carbonate minerals. The Pali Aike Volcanic Field in southern Patagonia, a basaltic province of geological significance, remains underexplored for CCS applications. Its location in the Magallanes region, a center for green hydrogen development, highlights its strategic value for CO₂ storage. This work presents the first laboratory-scale CO₂ injection experiments conducted on continental basalts from southern South America. Powdered basalt samples were reacted with water and supercritical CO₂ for 1, 7, 10, 15, 30, and 100 days, and both aqueous and solid phases were analyzed to track geochemical and mineralogical changes.

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