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

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 language	English
Title of host publication	Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
Pages	747-750
Number of pages	4
Publication status	Published - 2010
Event	13th International Conference on Water-Rock Interaction, WRI-13 - Guanajuato, Mexico Duration: 16 Aug 2010 → 20 Aug 2010

Other

Other	13th International Conference on Water-Rock Interaction, WRI-13
Country	Mexico
City	Guanajuato
Period	16.8.10 → 20.8.10

ASJC Scopus subject areas

Geology

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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)

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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 -.",

author = "Shvartsev, {S. L.}",

year = "2010",

language = "English",

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pages = "747--750",

booktitle = "Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13",

note = "13th International Conference on Water-Rock Interaction, WRI-13 ; Conference date: 16-08-2010 Through 20-08-2010",

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N2 - 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 -.

AB - 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 -.

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