Constituent

Sample

SiO₂

45.71

TiO₂

0.11

Al₂O₃

3.35

Fe₂O₃

1.15

MnO

0.05

MgO

25.40

CaO

6.32

Na₂O

< 0.01

K₂O

< 0.01

P₂O₅

0.05

Cl

< 0.01

SO₃

< 0.01

L.O.I.

11.35