成分

SiO₂

Al₂O₃

Fe₂O₃

CaO

MgO

SO₃

Na₂O

K₂O

Cl⁻

含量/%

47.7~51.0

20.0~28.6

5.8~8.8

3.6~6.2

2.2~4.8

0.2~0.7

0.9~1.3

2.2~3.5

0.01