Desalting of sodium and potassium chlorides at the final stages of halogenesis: Evidence from the Gremyachinsk potash deposit in the Caspian basin

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• 作者：G. A. Moskovskii ; O. P. Goncharenko ; K. K. Ilin
• 刊名：Lithology and Mineral Resources
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：51
• 期：1
• 页码：86-91
• 全文大小：1,510 KB
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  Moskovskii, G.A. and Goncharenko, O.P., Osnovnye cherty geokhimii kungurskogo galogeneza v zapadnoi chasti Prikaspiiskoi vpadiny (po vklyucheniyam v mineralakh) (Main features of the geochemistry of the Kungurian halogenesis in the western Caspian depression: Evidence from fluid inclusions in minerals) Available from VINITI, 1989, Moscow, no. 4072.
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• 作者单位：G. A. Moskovskii (1)
  O. P. Goncharenko (1)
  K. K. Ilin (2)
  
  1. Faculty of Geology, Saratov State University, ul. Astrakhanskaya 83, Saratov, 410012, Russia
  2. Chemical Institute, Saratov State University, ul. Astrakhanskaya 83, Saratov, 410012, Russia
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Mineral Resources
  Mineralogy
  Sedimentology
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3229

文摘

The study of “productive” intervals of the Gremyachinsk potash deposit showed that the precipitation of potassic and potassic–magnesium salts was accompanied by large-scale desalting of sodium chloride owing to the interaction of concentrated solutions from the given part of the saliferous basin with diluted solutions. The constant influx of diluted brine was characterized by the high content of sodium chloride, which led to the large-scale precipitation of halite as lenses, crusts, and accumulations of random morphology. Based on the ultramicrochemical analysis of the composition of brine inclusions in halites of different stages of densification, it is suggested that this process was accompanied by the growth of K ion concentrations in the brine and the subsequent desalting of potassium chloride in the carnallite stage brine with the formation of rocks of the carnallite–sylvinite paragenesis. Original Russian Text © G.A. Moskovskii, O.P. Goncharenko, K.K. Ilin, 2016, published in Litologiya i Poleznye Iskopaemye, 2016, No. 1, pp. 95–100.