Element

Sample A

Sample B

Element

Sample A

Sample B

Major element (g∙kg⁻¹)

Trace element (mg∙kg⁻¹)

Fe

389.5

378.5

V

1474

1970

C content

283

278

Ni

102

150

CaO

77.6

66.0

Cu

20

67

SiO₂

70.7

71.7

Rb

104

143

MgO

15.7

20.7

Sr

84

115

Al₂O₃

22.1

27.0

As

50

119

Na₂O

4.2

4.0

Ga

26

35

K2O

3.2

2.5

Ba

130

184

Zn

2.5

3.2

Cs

53

90

F

2.5

2.0

Y

5

9

P₂O₅

1.7

2.3

Zr

19

20

S

5.1

6.1

Mo

0

9

TiO₂

2.6

3.6

Sn

8

9

MnO

2.7

3.7

Sb

38

38

Cr₂O₃

0.10

0.1

La

11

10

Pb

0.39

0.56

Ce

7

35

Cl

0.58

0.78

Pr

4

4

Nd

11

27

Sc

4

4

pH

7.7 - 8.1

Bi

14

30

Moisture %

32

Th

2

2

U

2

2