Sample name

K1M

MA2

KB3

KG3

Physical properties (%)

Clay

12

22

78

37

Silt

51

20

7

45

Sand

37

58

15

18

Wl

42

43.6

59

103.7

Wp

34

26.5

32

53. 2

Ip

8

17.1

27

50.5

Chemical composition (wt%)

SiO₂

77.25

60.89

58.21

49.04

TiO₂

0.16

1.3

3.04

1.72

Al₂O₃

14.67

20.16

22.28

22.75

Fe₂O₃

1.4

2.59

3.97

6.92

MnO

0.01

0.01

0.02

0.02

MgO

0.08

0.39

0.13

0.53

CaO

0.06

0.63

0.18

0.46

Na₂O

nd

0.88

0

0

K₂O

1.08

4.64

1.29

0.74

P₂O₅

0.02

0.08

0.11

0.11

LOI

5.2

8.42

10.78

17.71

(A + AT + Fe₂O₃)

1.22

6.54

5.57

8.65