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Chemical Evolution of Water and Brines in Contact with Different Zechstein Salt Formations

Published online by Cambridge University Press:  26 February 2011

H.-J. Herbert
Affiliation:
Institut für Tieflagerung, Gesellschaft für Strahlen- und Umweltforschung mbH, Theodor-Heuss-Straβe 4, D-3300 Braunschweig, Fed. Rep. of, Germany
W. Sander
Affiliation:
Institut für Tieflagerung, Gesellschaft für Strahlen- und Umweltforschung mbH, Theodor-Heuss-Straβe 4, D-3300 Braunschweig, Fed. Rep. of, Germany
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Abstract

The paper gives a quantitative description of the chemical reactions, the dissolution and precipitation processes which take place when water or brines come into contact with the main mineral assemblages of the German Zechstein salt formation, rock salt with Ca-sulfates, and the potash beds hartsalz and carnallitite. The results of two large scale in situ dissolution tests are presented. These results have been successfully reproduced by computer modelling using the geochemical code EQ3/6.

Type
Research Article
Copyright
Copyright © Materials Research Society 1989

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References

REFERENCES

[1] D'Ans, J., Die Lösunqsqleichqewichte der Systeme der Salze ozeanischer Salzablagerungen. (Verlagsanst. für Ackerbau mbH, Berlin, 1933)Google Scholar
[2] Autenrieth, H., Neue, , für die Kalirohsalzverarbeitung wichtige Untersuchungen. - Kali und Steinsalz 1, Heft 11, 18 – 32, 1955 Google Scholar
[3] Cloke, P., Herbert, H.-J. and Khabiri, S., Modeling of geochemical processes in the Zechstein formation with EQ3 and EQ6 computer codes. - GSF internal report on the USA/FRG Near Field Geochemistry Workshop in Albuquerque, N.M., 1987 Google Scholar
[4] Braitsch, O., Salt Deposits - Their Origin and Composition, (Springer-Verlag, Berlin-Heidelberg-New York, 1971), 297 p.CrossRefGoogle Scholar
[5] Harvie, CE. and Weare, J. H., The prediction of mineral solubilities in natural waters: the Na-K-Mg-Ca-Cl-SO4-H2O system from zero to high concentration at 25 C - Geochim. Cosmochim. Acta, 44, pp. 981 –997CrossRefGoogle Scholar
[6] Harvie, C. E., Moller, N. and Weare, J. H., The prediction of mineral solubilities in natural waters; the Na-K-Mg-Ca.H-Cl-SO4-OH-HCO3-CO2-H2O system to ionic strength at 25 c, Geochim. Cosmochim. Acta, 48, pp. 723 – 752CrossRefGoogle Scholar
[7] Herbert, H.-J. and Sander, W., Physico-chemical processes during a hypothetical inflow of water or brine into a repository for radioactive wastes in salt formations, (Proc. of the Meeting of the Union of European Geoscientists, Strasbourg, 1983)Google Scholar
[8] Herbert, H.-J. and Sander, W., Die Flutung des Kalibergwerkes Hope -Ergebnisse des geochemischen Meβprogramms. - Kali und Steinsalz 10, pp. 326 – 333 (1987)Google Scholar
[9] Nishri, A., Herbert, H.-J., Jockwer, N. and Stichler, W., The geochemistry of brines and minerals from the Asse Salt Mine Germany. -Applied Geochem. 3, pp. 1 – 16 (1988)Google Scholar
[10] Sander, W. and Herbert, H.-J., Quantitative Beschreibung für die Lö-sungs und Ausfällungsvorgänge beim Eindringen von Wasser oder Lauge in ein Endlagerbergwerk im Zechsteinsalinar, (Abstracts International Symposium Zechstein, Hannover, 1987)Google Scholar