Fig. 1From: Silicate solution, cation properties, and mass transfer by aqueous fluid in the Earth’s interiorExamples of microphotographs of samples in the hydrothermal diamond anvil cell at high temperature and pressure. a View of the sample from SiO2–NaOH–H2O at 800 °C and 1135 MPa. b View of the sample from SiO2–CaO–H2O at 825 °C and 925 MPaBack to article page