Fig. 3From: Silicate solution, cation properties, and mass transfer by aqueous fluid in the Earth’s interiorExamples of high-frequency portion of Raman spectra in the systems SiO2–H2O (a), SiO2–NaOH–H2O (b), and SiO2–CaO–H2O (c) at pressure and temperature conditions as indicated on the individual spectraBack to article page