Celestite in the Weathering Crust on Limestone Exposed to an Urban Atmosphere in Cracow (Poland)

Wilczyńska-Michalik, Wanda; Michalik, Marek

doi:10.2478/v10002-007-0011-z

Abstract

Celestite containing very low amounts of barium occurs in weathering reaction zones developed on the Pińczów limestone exposed to the polluted atmosphere of Cracow. The mineral occurs both in limestone pore spaces filled with gypsum and in black gypsum crust. The Pińczów limestone contains ca 500 ppm strontium which was released during the reaction with atmospheric pollutants. The nucleation and growth of celestite, requiring significant concentration of components in evaporating solutions, is associated with gypsum crystallization.

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Celestite in the Weathering Crust on Limestone Exposed to an Urban Atmosphere in Cracow (Poland)

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