Table Aluminium fractionation The aluminium fractions were determined

Herein it is evident that the sampling sites are grouped as per study area. The geology of REF1 and REF2, is represented by hornblende granite and biotite granite which imparts a sodium and potassium signature to groundwater and surface water runoff. The CM and ACM sites are dominated by Karoo Supergroup strata and generally are of the calcium/magnesium bicarbonate type, yet a clear distribution of these sites are observed with the CM sites and ACM1 and ACM2 having more similar cationic exchange.