Table 6 The measured elemental concentrations of 40K, 232Th and 235U in the studied samples.

From: Geochemical, radiological, and heat-production characteristics of the ElGara granitoids (Southwestern Desert)

Sample

U

Th

K

U

Th

K

Th/U

ρ

RHP

Contribution of U, Th and K To RHP (%)

ID

(Bq/ kg)

(Bq/ kg)

(Bq/kg)

(ppm)

(ppm)

(%)

(kg m−3)

(µW/m3)

232U

232Th

40 K

Peraluminous Granite Gh20C

71.63

133.98

662.54

5.80

33.00

2.12

5.69

2376.21

3.49

37.55

57.45

5.01

Metaluminous Syenite Gh 3 C

50.64

166.46

1416.03

4.10

41.00

4.52

10.00

2427.50

3.88

24.44

65.71

9.86

Metaluminous Granite Gh 4 A

501.41

103.53

805.45

40.60

25.50

2.57

0.63

2326.08

10.72

83.89

14.17

1.94

Metaluminous Syenite Gs1B

48.17

102.72

1480.98

3.90

25.30

4.73

6.49

2392.37

2.83

31.37

54.72

13.91

Metaluminous Syenite Gs1C

39.52

81.20

1636.87

3.20

20.00

5.23

6.25

2401.27

2.40

30.51

51.27

18.22

Metaluminous Syenite Gs1E

23.47

40.19

1569.32

1.90

9.90

5.01

5.21

2411.49

1.47

29.71

41.63

28.66

Metaluminous Syenite Gs1I

16.06

18.27

1509.56

1.30

4.50

4.82

3.46

2418.46

0.98

30.42

28.32

41.26

Metaluminous Syenite Gs2A

39.52

62.52

1296.51

3.20

15.40

4.14

4.81

2428.66

2.05

36.14

46.76

17.10

Metaluminous Syenite Gh1A

77.81

97.44

1322.49

6.30

24.00

4.23

3.81

2432.43

3.31

44.06

45.14

10.80

Metaluminous Syenite Gh4B

92.63

120.58

1182.19

7.50

29.70

3.78

3.96

2403.41

3.86

44.46

47.35

8.19

Min (Metaluminous)

16.06

18.27

805.45

1.30

4.50

2.57

0.63

2326.08

0.98

24.44

14.17

1.94

Max (Metaluminous)

501.41

166.46

1636.87

40.60

41.00

5.23

10.00

2432.43

10.72

83.89

65.71

41.26

Average (Metaluminous)

98.80

88.10

1357.71

8.00

21.70

4.34

4.96

2404.63

3.50

39.44

43.90

16.66

Stand. Dev (Metaluminous)

144.15

41.64

236.91

11.67

10.26

0.76

2.42

30.63

2.72

16.93

14.14

11.20

Peralkaline Syenite Gh 2 A

44.46

147.78

1296.51

3.60

36.40

4.14

10.11

2432.49

3.45

24.16

65.68

10.16

Peralkaline Syenite Gh2B

54.34

90.54

1327.69

4.40

22.30

4.24

5.07

2454.19

2.79

36.83

50.19

12.98

Peralkaline Syenite Gh4C

39.52

70.64

1291.31

3.20

17.40

4.13

5.44

2411.43

2.15

34.09

49.84

16.07

Peralkaline Syenite Gh6

164.26

408.03

1447.20

13.30

100.50

4.62

7.56

2497.74

9.99

31.66

64.32

4.02

Peralkaline Syenite Gs1F

58.05

107.18

1265.33

4.70

26.40

4.04

5.62

2402.07

3.04

35.40

53.47

11.13

Min (Peralkaline)

39.52

70.64

1265.33

3.20

17.40

4.04

5.07

2402.07

2.15

24.16

49.84

4.02

Max (Peralkaline)

164.26

408.03

1447.20

13.30

100.50

4.62

10.11

2497.74

9.99

36.83

65.68

16.07

Average (Peralkaline)

72.13

164.83

1325.61

5.84

40.60

4.23

6.76

2439.58

4.28

32.43

56.70

10.87

Stand. Dev (Peralkaline)

46.54

124.22

63.95

3.77

30.60

0.20

1.89

34.19

2.88

4.47

6.91

3.97

Syenite Gh1B

54.23

79.06

904.40

4.39

19.47

2.89

4.44

2414.39

2.46

41.10

49.01

9.89

Syenite Gh3A

50.33

112.49

628.53

4.08

27.71

2.01

6.79

2414.39

2.82

33.24

60.77

5.99

Syenite Gh3B

26.29

19.40

268.96

2.13

4.78

0.86

2.24

2414.39

0.86

57.11

34.47

8.43

Syenite Gh3BB

22.00

15.99

296.18

1.78

3.94

0.95

2.21

2414.39

0.73

55.92

33.23

10.86

Granite Gh1E

205.05

74.47

775.15

16.60

18.34

2.48

1.10

2414.39

5.16

73.99

21.98

4.03

Granite Gh3A

37.27

35.63

783.91

3.02

8.78

2.50

2.91

2414.39

1.45

47.96

37.50

14.55

Granite Gh1d

34.00

38.59

939.44

2.75

9.51

3.00

3.46

2414.39

1.47

42.98

39.90

17.13

Granite Gh1F

369.68

108.30

398.12

29.93

26.67

1.27

0.89

2414.39

8.64

79.67

19.09

1.24

World average *

32.00

45.00

420.00

 

Granite

78.00

111.00

1104.00

Building material

50.00

50.00

500.00

Soil

35.00

30.00

400.00

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