Groundwater/rock interaction/evolution (Gibbs diagram)―Abuja FCT

Ionic character

Samples

%

Cations

Atmospheric precipitation dominance

4

4.3

Rock-weathering dominance

89

94.5

Evaporation-crystallization dominance

1

0.9

Anions

Atmospheric precipitation dominance

4

4.3

Rock-weathering dominance

89

94.5

Evaporation-crystallization

1

0.9