... Of these factors, the %CaO, the molar Si–Al in the original mineral, the use of KOH, the extent of dissolution of Si and the molar SirAl ratio in solution show a positive correlation, while the ... mm than the other Al–Si minerals, the contribution of the Al–Si minerals to the gel phase is still important A separate experiment was conducted on the composition of the gel phase for the stilbite–kaolinite ... reactions Table gives the extent of dissolution data of all 16 minerals in terms of the concentration of Al or Si in 20 ml of solution after h of contact with 0.50 g of mineral The alkaline solutions...