The Brines of
chotts in Algerian Northeastern Sahara are highly concentrated solutions of
mineral salts with a salinity that far exceeds that of the sea water (120 to
440 g/l).
The first
interpretation of data allows to specify the chemical facies of these brines
form their chemical compositions. They have mainly a very marked sodic
chlorinated character.
Databases of the
thermodynamic model PHREEQC v3 were used to determine the saturated state of
the brines with respect to principal chemical species. They are more
oversaturated with calcite than with gypsum.
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