Mineral content

Initial sample

After gravitational and magnetic enrichments

SiO₂

72.45

73.91

FeO

0.61

0.05

Fe₂O₃

0.55

0.1

TiO₂

0.03

0.02

MnO

0.05

0.05

Al₂O₃

15.1

14.78

CaO

2.33

2.21

MgO

0.20

0.15

K₂O

3.41

3.52

Na₂O

4.54

4.83

PPP

0.67

0.56

SO₃

0.1

0.1

P₂O₅

0.1

0.1