Skip to main content
Heritage Science

Table 1 Chemical compositions of the laterite samples collected from the Koh Ker monuments, determined by Activation Laboratories, Ltd.

From: Construction sequence of the Koh Ker monuments in Cambodia deduced from the chemical composition and magnetic susceptibility of its laterites

  

Pr. Thom Palace

Pr. Thom Outer Encl.

Pr. Thom Prang

Neang Khmau Enclosure

Pr. Pram Enclosure

Pr. Chen Outer Encl.

Banteay Pir Chan Outer Encl.

Srayan Village

Srayan Village

Sample no.

 

2605

2608

2611

2613

3309

3311

3313

2602

2616

Stage

 

1st

1st

2nd

3rd

3rd

3rd

4th

outcrop

outcrop

Code

 

4E-expl

4E-expl

4E-expl

4E-expl

4Litho

4Litho

4Litho

4E-expl

4E-expl

SiO2

%

22.38

32.45

25.01

17.74

19.15

15.57

17.24

20.49

17.59

Al2O3

%

16.05

9.39

8.92

13.69

17.92

13.97

16.00

19.81

16.76

Fe2O3(T)

%

45.93

45.22

52.6

48.9

42.13

48.72

49.11

39.27

48.53

MnO

%

1.41

2.17

1.25

0.08

0.584

1.787

0.37

0.82

0.76

MgO

%

0.12

0.12

0.13

0.06

0.12

0.12

0.08

0.08

0.10

CaO

%

0.15

0.08

0.10

0.13

0.10

0.16

0.05

0.14

0.11

Na2O

%

0.01

0.01

0.01

< 0.01

0.01

0.01

< 0.01

0.01

0.01

K2O

%

0.03

0.05

0.02

0.03

0.06

0.07

0.04

0.07

0.03

TiO2

%

1.23

0.655

0.556

2.14

1.904

1.727

1.643

2.353

1.695

P2O5

%

0.55

0.23

0.21

3.22

1.88

2.47

1.17

2.17

1.76

LOI

%

13.05

10.01

10.18

12.89

14.44

14.08

12.99

14.63

12.81

Total

%

100.90

100.40

98.98

98.89

98.31

98.69

98.70

99.84

100.10

Au

ppb

< 5

< 5

< 5

< 5

NA

NA

NA

< 5

< 5

Ag

ppm

< 0.5

< 0.5

< 0.5

< 0.5

1.6

0.8

1.8

< 0.5

< 0.5

As

ppm

13

27

27

7

< 5

8

10

6

10

Ba

ppm

702

1610

922

557

807

2705

199

898

654

Be

ppm

3

3

2

6

5

7

5

5

6

Bi

ppm

< 2

< 2

< 2

< 2

< 0.4

0.8

< 0.4

< 2

< 2

Br

ppm

2

< 1

< 1

< 1

NA

NA

NA

1

< 1

Cd

ppm

1.0

0.8

0.9

1.1

NA

NA

NA

1

0.9

Cr

ppm

312

150

204

107

670

670

880

624

741

Cs

ppm

1.0

< 0.5

< 0.5

< 0.5

0.6

< 0.5

< 0.5

< 0.5

< 0.5

Cu

ppm

186

131

187

100

100

140

90

125

97

Hf

ppm

4.2

3.1

2

2.1

2.7

1.8

4.7

3.9

4.4

Hg

ppm

< 1

< 1

< 1

< 1

NA

NA

NA

< 1

< 1

Ir

ppb

< 5

< 5

< 5

< 5

NA

NA

NA

< 5

< 5

Mo

ppm

9

2

2

8

12

16

15

9

9

Ni

ppm

237

78

64

250

210

290

160

249

229

Pb

ppm

12

16

15

< 5

9

8

9

< 5

6

Rb

ppm

< 20

< 20

30

< 20

7

5

3

< 20

< 20

S

%

0.005

0.002

0.002

0.002

NA

NA

NA

0.005

0.002

Sb

ppm

0.5

0.7

1.2

0.3

< 0.5

< 0.5

< 0.5

0.4

0.8

Sc

ppm

20.2

15.8

14.3

23.5

26

25

21

33.2

21.7

Se

ppm

< 3

< 3

< 3

< 3

NA

NA

NA

< 3

< 3

Sr

ppm

34

36

16

1214

872

834

245

1168

613

Ta

ppm

< 1

< 1

< 1

2

1.4

1.7

1.6

3

1

Th

ppm

3.9

1.8

1.1

7.8

9.4

9.0

6.5

9.1

6.6

U

ppm

2.6

1.8

1.1

2.5

4.3

4.9

3.8

3.8

3.7

V

ppm

749

923

1698

381

440

495

563

403

507

Y

ppm

9

18

12

52

41

45

20

60

42

Zn

ppm

80

38

36

128

120

150

100

122

88

Zr

ppm

192

185

108

138

159

83

208

185

219

La

ppm

18.7

18.1

6.7

136

147

133

79.8

165

148

Ce

ppm

275

113

51

193

270

274

157

243

218

Nd

ppm

8

21

9

75

106

102

58

103

92

Sm

ppm

2.5

5.7

2.3

16.5

20.7

20.1

11.2

22.1

18.5

Eu

ppm

0.8

1.7

0.8

5.4

6.9

6.79

3.56

7.5

6.3

Tb

ppm

< 0.5

0.7

< 0.5

1.5

2.4

2.5

1.3

1.7

1.8

Yb

ppm

1.1

3.1

1.8

2.9

2.5

4.6

2.0

3.1

2.9

Lu

ppm

0.17

0.38

0.25

0.4

0.34

0.61

0.27

0.37

0.36

Back to article page