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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