Composition

SiO₂

TiO₂

Al₂O₃

TFe₂O₃

MnO

MgO

CaO

Na₂O

K₂O

P₂O₅

LOI

Others

Mass%

23.5

0.31

5.0

3.57

0.2

2.43

57.1

0.24

0.49

0.18

4.0

2.96