Elements

${\text{SO}}_4^{2-}$

CaO

Al₂O₃

F

MgO

Na₂O

SiO₂

K₂O

Fe₂O₃

P₂O₅

% weigh

49.5

33.5

2.75

2.5

1.26

0.56

0.52

0.06

0.05

1.75