Table 4 Enrichment factors (EFs), Hg, TOC and Hg/TOC for samples of two sections in wells 570 and 803 from eastern and western (respectively) corners of the Bakchar ironstone deposit

5701923

8.3

1.2

4.2

1.2

0.6

0.9

1.5

30.0

0.19

157.9

5701935

19.9

2.6

23.4

25.0

0.5

0.3

13.5

5.0

0.82

6.1

5701946

34.8

2.6

25.5

22.5

0.5

0.4

13.7

4.0

0.65

6.2

5701960

34.4

2.6

25.9

21.8

0.5

0.3

13.9

4.0

0.31

12.9

5701973

19.2

2.3

23.5

14.2

0.5

0.4

11.9

2.0

0.13

15.4

5701985

34.0

2.6

22.2

14.9

0.5

0.4

11.6

1.8

0.09

20.0

5701998

33.7

1.9

23.7

16.0

0.5

0.4

12.2

31.0

0.09

344.4

5702013

31.2

1.7

26.9

16.1

0.5

0.4

12.6

5.5

0.08

68.8

5702028

12.4

2.2

25.8

17.9

0.5

0.4

13.9

8.8

0.10

88.0

5702042

20.0

2.8

17.8

12.1

0.4

0.5

10.7

7.0

0.10

70.0

5702082

17.6

2.5

17.4

12.0

0.5

0.4

10.9

11.0

0.17

64.7

5702087

24.3

2.6

17.0

12.5

0.5

0.5

10.3

8.7

0.19

45.8

5702097

30.4

2.7

17.2

12.1

0.5

0.4

10.2

8.4

0.25

33.6

5702105

22.1

2.2

16.6

10.2

0.6

0.4

9.1

7.2

0.16

45.0

5702122

12.6

2.7

19.9

11.7

0.5

0.4

10.2

7.3

0.17

42.9

5702136

2.3

3.2

24.1

12.4

0.4

0.4

11.8

14.0

0.24

58.3

5702140

7.4

1.4

12.5

6.8

0.5

0.5

6.8

5.0

0.19

26.3

5702157

9.1

2.0

15.5

8.6

0.5

0.5

8.0

11.0

0.35

31.4

5702161

11.0

2.8

19.5

10.1

0.4

0.4

9.7

10.1

0.49

20.6

5702170

13.5

2.6

19.5

11.4

0.4

0.4

10.2

7.0

0.42

16.7

5702189

16.1

2.5

19.9

12.4

0.4

0.4

11.0

15.5

0.54

28.7

5702195

21.3

2.2

21.0

14.0

0.4

0.4

12.8

8.0

0.18

44.4

5702200

29.0

2.6

25.0

20.2

0.4

0.4

15.3

4.0

0.16

25.0

5702218

38.3

3.3

30.9

26.6

0.4

0.3

19.1

6.0

0.44

13.6

5702219

39.1

2.9

30.7

26.6

0.4

0.3

18.0

18.0

0.46

39.1

5702234

39.2

2.5

31.5

24.9

0.4

0.3

17.5

7.0

0.07

100.0

5702240

30.8

2.3

28.6

18.3

0.4

0.4

15.6

18.0

0.49

36.7

5702248

21.4

2.4

26.5

18.7

0.4

0.4

15.6

11.0

0.41

26.8

5702279

19.0

2.5

27.4

24.7

0.4

0.3

16.6

14.0

0.56

25.0

5702286

6.7

1.4

5.8

5.6

0.8

0.5

4.3

10.0

0.38

26.3

5702320

8.1

1.6

14.9

8.0

0.5

0.5

8.1

18.0

0.58

31.0

5702343

2.2

2.4

18.4

11.6

0.3

0.3

10.2

16.2

0.57

28.4

5702348

6.4

2.0

14.7

10.5

0.3

0.3

8.9

11.0

0.59

18.6

5702355

9.6

1.6

12.2

9.0

0.3

0.4

8.2

6.9

0.49

14.1

5702368

5.0

1.5

6.7

8.0

1.1

0.6

4.1

20.0

0.69

29.0

5702390

5.5

2.1

26.0

12.4

0.5

0.3

11.7

8.0

0.17

47.1

5702395

6.4

1.8

25.5

10.8

0.6

0.2

11.2

5.7

0.22

25.9

5702423

11.3

2.1

19.0

14.9

0.5

0.5

9.7

10.0

0.35

28.6

5702432

12.1

2.1

20.0

16.3

0.5

0.4

10.3

13.0

0.34

38.2

5702440

13.0

2.2

21.8

17.4

0.5

0.4

11.2

6.0

0.37

16.2

5702463

15.6

2.6

28.2

20.4

0.5

0.3

14.6

10.0

0.04

250.0

5702465

6.8

1.4

7.1

6.0

0.5

0.6

3.9

6.7

0.03

223.3

5702470

5.3

1.2

3.5

3.5

0.5

0.8

2.1

3.0

0.03

100.0

5702480

4.3

1.0

1.3

1.8

0.6

0.9

1.0

81.4

0.22

370.0

5702488

4.8

1.1

2.3

2.6

0.6

0.9

1.5

140.2

5.72

24.5

8031624

3.0

2.6

10.5

30.2

0.5

0.3

16.5

36.3

0.83

43.7

8031634

26.5

3.6

34.9

29.2

0.5

0.3

19.0

49.7

0.18

276.1

8031645

22.6

3.9

32.7

23.5

0.6

0.3

16.7

88.1

0.64

137.7

8031665

6.4

3.6

31.9

31.5

0.5

0.3

22.4

49.3

0.14

352.1

8031682

23.7

3.5

28.4

3.7

0.6

0.4

2.9

5.0

0.07

71.4

8031702

23.5

3.4

27.4

26.6

0.5

0.3

18.2

52.4

0.09

581.7

8031712

25.6

3.8

26.8

25.7

0.5

0.4

17.9

99.7

0.11

906.4

8031722

1.1

3.4

29.2

25.9

0.5

0.3

17.7

44.4

0.21

211.4

8031736

20.7

2.4

22.2

23.1

0.5

0.4

16.5

39.8

0.13

306.2

8031753

10.8

1.8

15.4

14.9

0.5

0.4

11.1

19.0

0.21

90.5

8031773

9.4

1.5

8.9

15.0

0.4

0.4

10.7

64.3

0.09

714.4

8031791

14.5

2.1

16.0

10.0

0.5

0.4

7.0

45.1

0.17

265.3

8031801

3.5

1.2

7.0

3.1

0.6

0.4

4.9

75.8

0.25

303.2

8031812

7.9

1.2

9.1

6.2

0.5

0.4

6.0

87.1

0.33

263.9

8031823

8.7

1.8

13.5

5.5

0.6

0.4

6.5

98.4

0.41

240.0

8031843

7.4

2.2

11.1

4.2

0.4

0.4

9.6

83.2

0.41

205.3

8031863

8.6

1.9

12.7

5.1

0.5

0.4

6.3

67.9

0.40

169.8

8031883

12.6

2.4

20.0

9.3

0.5

0.4

7.2

70.8

0.29

244.1

8031903

8.9

1.8

15.2

4.9

0.5

0.4

7.5

93.8

0.33

284.2

8031918

11.8

1.9

18.8

11.1

0.5

0.4

9.4

63.1

0.22

286.8

8031939

7.1

2.3

16.4

5.8

0.5

0.5

7.3

85.6

0.17

503.5

8031959

1.2

1.0

5.6

4.4

0.5

0.6

5.2

79.4

0.20

397.0

8031979

5.6

1.1

7.6

3.8

0.5

0.6

3.7

76.0

0.14

542.9

8031999

6.4

0.9

6.0

3.6

0.3

0.6

3.5

41.0

0.14

292.9

8032013

3.0

1.1

6.6

2.4

0.3

0.6

3.6

38.2

0.13

293.8

8032027

1.6

0.9

1.9

0.6

0.4

0.8

1.6

18.9

0.12

157.5

8032047

1.3

0.8

2.3

1.1

0.4

0.7

2.3

17.5

0.15

116.7

8032074

1.1

0.9

6.9

3.2

0.4

0.6

2.8

49.0

0.12

408.3

8032094

1.8

1.2

4.9

1.1

0.5

0.5

4.5

56.3

0.24

234.6

8032107

2.2

1.3

12.2

4.0

0.5

0.4

9.2

74.5

0.17

438.2

8032127

0.3

1.3

17.1

1.4

0.4

0.3

9.4

63.3

0.26

243.5

8032147

0.1

1.9

12.3

3.4

0.4

0.3

9.7

86.3

0.19

454.2

8032167

34.9

3.4

30.4

16.9

0.4

0.4

5.9

51.0

0.18

283.3

8032187

12.5

2.1

18.8

7.3

0.5

0.5

3.8

36.2

0.15

241.3

8032204

5.4

1.8

13.8

6.7

0.4

0.3

6.7

78.3

0.26

301.2

8032246

15.7

2.3

16.2

6.2

0.5

0.4

8.7

55.5

0.09

616.7

8032266

18.6

2.8

21.2

7.3

0.5

0.3

13.1

40.2

0.07

574.3

8032286

21.7

2.6

26.8

12.5

0.5

0.3

11.3

52.0

0.06

866.7

8032317

14.8

1.8

20.7

10.0

0.6

0.3

6.1

70.3

0.18

390.6

8032340

9.0

2.6

16.9

7.1

0.5

0.3

6.8

109.8

0.15

732.0

8,032,360

7.5

2.2

18.2

6.4

0.5

0.3

6.2

92.6

0.43

215.3

8032380

3.5

1.3

4.7

5.2

0.7

0.4

1.9

146.7

0.19

772.1