Conversely in certain conditions, large volumes of anorthite crystals may precipitate from thoroughly molten magma in a cumulate process as it cools. This leaves a drastically reduced concentration of silica in the remainder of the melt. The segregation of the silica from the melt leaves it in a state that may favour syenite formation.
Conversely in certain condit,ions large volumes of anorthite crystals may precipitate from thoroughly m:olten magma in a cumulat?e process as it cools. This leaves a drastically reduced concentration of silica in the remainder of the melt Th.e segregation of the silica from the melt leaves it in a state that may favour syenite formation