Yaoundé Durov’s

samples

%

SI

Water type

Wet

Dry

Wet

Dry

Diamond Field

A

Normal earth alkaline water; prevailing ${\text{HCO}}_3^{-}$

29

10

64.4

22.2

B

Normal earth alkaline water; prevailing ${\text{HCO}}_3^{-}$ , ${\text{SO}}_4^{2-}$ or Cl⁻

2

12

4.4

26.7

C

Normal earth alkaline water; prevailing ${\text{SO}}_4^{2-}$ or Cl⁻

10

23

22.2

51.1

D

Earth alkaline water; increased portions of alkalis; prevailing ${\text{HCO}}_3^{-}$

4

0

8.9

0

Cation Field

1

Ca-rich waters

33

19

73.3

42.2

2

Mg-rich waters

12

26

26.7

57.8

Anion Field

4

${\text{HCO}}_3^{-}$ waters

37

17

82.2

37.8

6

Cl⁻ waters

8

28

17.8

62.2