Oxides (%)

China Clay Qty

Fire Clay Yorkshire

Building Brick Clay Glacial

Flint Clay Negev

Ball Clay Tennessee

(Belpahar Refractory Clay India

Residual Kaolin Ibadan

Kankara Clay Katsina

SiO2

46.88

56.60

60.10

36.00

53.96

50.00

63.20

44.09

Al2O3

37.65

26.90

17.10

47.00

29.34

31-33

25.61

38.67

Fe2O3

0.88

1.70

5.40

1.20

0.98

3.5

1.52

1.13

TiO2

0.09

1.30

1.20

3.00

-

1.38

0.22

2.21

Na2O

0.21

0.22

0.70

0.30

0.12

1.36 - 2.0

0.24

0.36

K2O

1.61

1.26

2.70

0.30

0.28

1.75

0.52

CaO

0.03

0.20

3.70

0.20

0.37

0.61

0.10

1.20

MgO

0.13

0.30

2.80

0.20

0.30

0.38

0.05

0.15

LOI

8.00

1.26

6.40

13.00

14.01

9-14

13.50

14.43