Fig. 8: Schematic diagram showing the pathways of mineral alteration in thermal systems with water and K-feldspar. | Nature Communications

Fig. 8: Schematic diagram showing the pathways of mineral alteration in thermal systems with water and K-feldspar.

From: Microdroplets initiate organic-inorganic interactions and mass transfer in thermal hydrous geosystems

Fig. 8

H+ formed via water ionization reacts with feldspar, inducing various mineral alterations. The dissolution and precipitation of minerals like feldspar, boehmite, and illite / muscovite, along with the ionization and reformation of water molecules, entail the release or consumption of ions and solutes (H+, OH−, Al3+, K+, and SiO2(aq)) into or from the water solution. These processes potentially lead to H/O exchange between water and minerals. The L and B sites represent the Lewis acid sites and the Brønsted acid sites in the aluminosilicate minerals, respectively (re-use permission has been obtained from Elsevier).

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