👉 An ultramafic fluid, also known as an ultramafic brine or melts, is a highly concentrated, low-viscosity liquid primarily composed of water and dissolved minerals, with a significant proportion of magnesium and iron-rich compounds. These fluids are typically found in deep, hot environments such as the Earth's mantle or at the core-mantle boundary, where they play a crucial role in mantle convection and the transfer of heat and elements between the Earth's interior and surface. Ultramafic fluids are characterized by their low pH, high salinity, and unique chemical composition, which can significantly influence the geochemical processes and mineralogy in their host rocks. They are often associated with volcanic systems, particularly those involving basaltic magmas, and can contribute to the formation of economically important mineral deposits.
