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$3 \mathrm{Al}_{2} \mathrm{O}_{3} .2 \mathrm{SiO}_{2}$

$\mathrm{Na}_{2} \mathrm{O} .2 \mathrm{SiO}_{2}$

$\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{SiO}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}$

$\text { 3NaF.AlF }$