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Minerals successions crystallisation related to tunisian natural brines
Author(s) -
M'nif A.,
Rokbani R.
Publication year - 2004
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200310147
Subject(s) - solubility , crystallization , seawater , evaporation , diagram , phase diagram , mineralogy , chemistry , thermodynamics , geology , oceanography , organic chemistry , physics , phase (matter) , mathematics , statistics
Natural brines sampled from Sebkhats in southern part of Tunisia are considered to be seawater‐type solutions. The equilibrium solubility of this kind of solutions might be described by the fivefold seawatertype system Na + , K + , Mg 2+ , Cl ‐ , SO 4 2‐ // H 2 O. The crystallisation sequences of salts, observed under solar evaporation, of two different Tunisians brines is discussed. Very important differences between the foreseeable results, based on the Equilibrium Solubility Diagram at 25 °C, and the experimental ones are settled. An attempt to explain the differences, based on the so‐called “solar sequences” as well as the “solar diagram” of evaporation, is made. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)