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Table 6 Saturation indices of the studied groundwater samples, using PHREEQC geochemical model

From: Rock-water interaction processes based on geochemical modeling and remote sensing applications in hyper-arid environment: cases from the southeastern region of Egypt

Well no.

Aquifer

Aragonite, CaCO3

Calcite, CaCO3

Dolomite, CaMg(CO3)2

Alunite, KAl3(SO4)2(OH)6

Gibbsite, Al(OH)3

Goethite, FeOOH

Hematite, Fe2O3

Iron(III) oxide-hydroxide

Magnetite, MnOOH

Barite, BaSO4

1

Alluvial

0

0.09

0.31

 

0.82

7

17

 

13

 

2

0

0

0

6

3

9

21

   

3

0.61

0.75

1.75

 

1.3

7

18

   

4

0.66

0.8

2

       

5

0

0.02

0.14

2

1.65

7

18

 

13

0.4

6

0.24

0.39

0.89

0.35

1.44

7

18

 

14

0.35

7

   

4

8

2.59

20

 

13

 

8

0

0.08

0.1

3.44

2.32

8.49

20

 

13

 

9

   

3.14

2.12

8.16

19.32

 

12.76

 

10

0

0.14

 

1.68

1.31

   

13.9

 

11

0

0.07

 

1.14

1.44

13.8

    

12

Nubian Sandstone

    

1

9

21

2

10

 

13

    

2

9

21

4

20

 

14

    

1.16

9.19

21.38

2.3

17.15

 

15

    

1.77

9.51

22

2.6

17.5

 

16

    

0.86

9.5

22

2.6

16.15

 

17

    

1.44

8.24

19.48

1.34

17.6

 

18

    

1.4

8.34

19.69

1.45

14.94

 

19

    

1.42

7.92

18.84

1

14.79

 

20

    

1.4

7

18

1

16.19

 

21

    

1.4

7.92

17

1

15.67

 

22

    

1.37

7.76

18.52

0.9

15.66

 

23

    

1.4

7.53

18.07

0.7

13.82

 

24

Fractured basement

  

0.58

   

17.52

   

25

  

0.53

0

0.67

8.45

19.9

   

26

0

0.11

0.33

0.48

1.79

8.33

19.66

 

16

 

27

  

0.06

0

2

9

21

 

16.27

 

28

   

1.89

1.61

7.95

18.9

 

11.12

 

29

0

0.05

0.09

0

1.31

7.62

18.25

   

30

0

0.01

 

0

1.49

8.22

19.45

 

16.16

 

31

0.19

0.34

0.44

0

1.48

6.98

16.97

 

14.7

 

32

0.22

0.37

0.68

1.7

1.64

   

12.43

0.1

33

0

0.14

0.07

1.46

1.8

   

14.79

0.25

34

   

5.3

2.78

8.09

19.2

 

13.33

0

35

0.04

0.19

0.09

1.47

1.19

    

0

36

0.04

0.18

0.24

0.62

1.41

   

13.43

0

37

0.49

0.63

1.21

0.52

1.03

   

13.26

0.02

  1. The + values of the saturation indices express the over-saturated phase, the 0 values of the saturation indices express the saturated phase