The Effects of Dissolved Organic Carbon on Evaporite Minerals

  • Barbara Javor
Part of the Brock/Springer Series in Contemporary Bioscience book series (BROCK/SPRINGER)

Abstract

Because evaporites are salts precipitated from electrolyte solutions, it logically follows that the physical chemistry of natural brines should be similar to that of pure solutions of mixed electrolytes prepared in the laboratory. However, such laboratory models do not acknowledge the contribution of organisms to brine chemistry, and thus they ignore the potential role of dissolved organic matter (DOC) as natural chelators or as competitive, inhibitory, or catalytic substances. The role DOC plays in calcium carbonate and gypsum precipitation is much better known than its role in the formation of more economically important halite and potash minerals. This gap in knowledge will remain until more is known about the types and concentrations of DOC in natural brines saturated with respect to these minerals. The following discussion outlines the known or presumed role of DOC in modifying the nature of several evaporite minerals.

Keywords

Lignin Hydrocarbon Pyruvate Beach Alkane 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • Barbara Javor

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