3Al2O3.2SiO23 \mathrm{Al}_{2} \mathrm{O}_{3} .2 \mathrm{SiO}_{2}3Al2O3.2SiO2
Na2O.2SiO2\mathrm{Na}_{2} \mathrm{O} .2 \mathrm{SiO}_{2}Na2O.2SiO2
Al2O3⋅2SiO2⋅2H2O\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{SiO}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}Al2O3⋅2SiO2⋅2H2O
3NaF.AlF \text { 3NaF.AlF } 3NaF.AlF