Table 2 Distribution of U, Th, and K for the different alteration zones through drift# D_I and D#_II at El-Missikat exploratory tunnels

D_I

 Brecciation

Avg., 43.32

58.93

4.57

1.4

15.19

11.17

Max., 69.2

71.6

7.3

2.29

49

37

Min., 29.2

48.2

1.2

0.76

7.65

4.29

 Silicification

Avg., 41.63

63.67

3.12

1.57

23.1

15.61

Max., 59.1

71.9

6.7

2

31.38

26.86

Min., 33.8

56.4

1.9

0.95

10.57

5.28

 Greisenization

Avg., 41.77

57.32

4.48

1.45

13.82

10.08

Max., 71.9

72.5

6

2.46

38.33

23.33

Min., 26.4

44.5

1.5

0.78

8.56

4.56

 Kaolinization

Avg., 29.73

56.21

4.15

1.93

14.34

7.44

Max., 37.2

63.5

5.7

2.79

19.9

10.78

Min., 22.1

49.2

2.7

1.48

8.63

5.14

D_II

 Brecciation

Avg., 41.53

61.72

6.12

1.5

10.15

6.86

Max., 45.0

72

7.6

1.79

12.82

8.42

Min., 36.20

45.6

5.3

1.01

7.35

5.04

 Greisenization

Avg., 36.11

56.4

4.46

1.64

14.34

9.38

Max., 95.6

70.2

6.9

3.03

89.86

65

Min., 19.0

36.3

0.7

0.6

8.05

4.45

 Kaolinization

Avg., 29.84

54.89

4.9

1.87

11.57

6.32

Max., 37.2

63

6.1

2.72

17.11

10.69

Min., 23.2

45.4

3.2

1.4

8.05

4.62