Hydrogeochemical processes of dawsonite formation: Evidence for evolution of a water-rock system

S. L. Shvartsev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The results of a geochemical study of groundwater in an area of dawsonite mineralization are reported. The studied groundwater has a sodium bicarbonate composition, with pH 7.3-9.2, and a salinity of 0.4-7.2 g/L. The equilibrium conditions in the water with respect to dawsonite, calcite, gibbsite, kaolinite, montmorillonite, quartz, albite, anorthite, and analcime were investigated. A comprehensive consideration of groundwater composition and ore-forming properties of the water-rock system led to the conclusion that dawsonite is a product of aluminosilicate rock weathering. However, this mineral is formed only under conditions of reduced water exchange providing a long-term water-rock interaction and accumulation of sufficient amounts of Na +, OH -, HCO 3 -, CO 3 2-, and Al(OH) 4 -.

Original languageEnglish
Title of host publicationWater-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
Pages747-750
Number of pages4
Publication statusPublished - 2010
Event13th International Conference on Water-Rock Interaction, WRI-13 - Guanajuato, Mexico
Duration: 16 Aug 201020 Aug 2010

Other

Other13th International Conference on Water-Rock Interaction, WRI-13
CountryMexico
CityGuanajuato
Period16.8.1020.8.10

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ASJC Scopus subject areas

  • Geology

Cite this

Shvartsev, S. L. (2010). Hydrogeochemical processes of dawsonite formation: Evidence for evolution of a water-rock system. In Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13 (pp. 747-750)