Serpentinization of forsterite under hydrothermal conditions and controlled synthesis of lizardite

Serpentinization is a widely observed hydration process in the earth’s crust. In this study, hydrothermal experiments were performed at different temperatures, times, and pH values to explore geochemical processes of serpentinization forsterite. The results indicated that forsterite converts serpentine after reacting with SiO2 200 °C 13 for 20 days system. X-ray diffraction patterns showed lizardite, lamellar leaf-like micro-morphology. Furthermore, hydroxyl absorption peaks, which represent formation Fourier-infrared spectroscopy spectra. newly formed high crystallinity relatively perfect crystal form. High-resolution electron microscopy layer only appeared on surface. transformation was coupling dissolution precipitation where replaced from surface; [SiO4]4− [MgO6]10− units attached situ surface, reacted, structure. These are fundamental significance exploring controllable synthesis between olivine group minerals as well understanding genesis, behavior, geological environment ultrabafic rock alteration deposits.