Melt viscosity as a principal factor controlling the dissolution rates of the lithosphere minerals in planetary and geological melts. A review and perspectives

Planetary and geological melts and magmas produced at depth encounter rocks at a variety of temperatures and redox conditions during their ascension towards the surface of planetary bodies. Reactions occur between the magma and surrounding rock material, but despite their potential importance for the regulation of magmatic differentiation, the rates of such interactions are rarely considered and poorly known. The aim of this work is to review the results of high-temperature experiments and kinetic models for the dissolution of the main rock-forming minerals in aluminosilicate melts, that may be applied to partial melting of common rock types, and reactions between the melts and the principal rocks composing the lithosphere. A kinetic equation allowing the first-order prediction of mineral dissolution rates in planetary and geological melts was generated. The diffusion-controlled dissolution rate r (mol cm-2 s-1) of common rock-forming silicate minerals in aluminosilicate melts at 1300 ± 20 °C and