Soluble aluminum silicates: Stoichiometry, stability, and implications for environmental geochemistry

B. A. Browne, C. T. Driscoll

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Abstract

Soluble aluminum silicate (Al-Si) complexes are critical species for the development and application of geochemical models. A fluorescence probe technique was used to show that Al-Si complexes account for up to 95% of the total inorganic mononuclear Al in natural waters. The presence of these soluble Al-Si species affects the solubility of Al-Si minerals. Soluble Al-Si species may be important intermediates in the weathering reactions of primary Al-Si minerals and should be considered in dissolution models. Soluble Al-Si species may be key components controlling the formation of metastable and new stable minerals during interactions between water and rocks or soils.

Original languageEnglish (US)
Pages (from-to)1667-1670
Number of pages4
JournalScience
Volume256
Issue number5064
DOIs
StatePublished - Jan 1 1992

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