Chemical composition

Element

SiO₂

Al₂O₃

Fe₂O₃

TiO₂

MnO

MgO

CaO

NaO₂

K₂O

P₂O₅

LOI

wt%

61.14

31.09

0.74

1.25

0.01

0.00

0.09

0.00

0.07

0.06

5.36