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Showing 1 to 5 of 5 for “"schwertmannite"”.
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Effect of Solution Chemistry on Schwertmannite Formation
… crystalline ferric hydroxysulfate nanomineral, schwertmannite, as a model system to understand the effect of formation conditions, specifically solution chemistry, on its physico-chemical characteristics. Previous studies indicate schwertmannite has highly variable bulk sulfate (Fe/S molar from …
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Resolving the Structure, Morphology, and Trace Metal Association of Nanominerals: The Case for Schwertmannite
Schwertmannite, a ferric oxyhydroxysulfate mineral typically found under acidic, high sulfate and iron aqueous conditions, such as acid mine drainage environments, was studied using analytical high resolution transmission electron microscopy (HRTEM). HRTEM offers advantages over bulk techniques …
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Characterisation of Schwertmannite - Geochemical Interactions with Arsenate and Chromate and Significance in Sediments of Lignite Opencast Lakes
Fe(III) oxyhydroxysulfate schwertmannite [idealised formula: Fe8O8(OH)6SO4], frequently precipitates as a product of sulphide weathering in acidic, sulfate-rich waters. In order to investigate the environmental importance of schwertmannite, geochemical and mineralogical methods were applied in …
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3D Printing of Specialty Devices for Geochemical Investigations: Real-Time Studies of Goethite and Schwertmannite Formation
… for in situ small-angle x-ray scattering (SAXS). Schwertmannite (pH 2.7) and goethite (6.2) are precipitated from solution using various setups and observed differences in growth rates are discussed. The data show the potential of 3D printing for enabling novel laboratory geochemical experiments.
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Spectral Reflectance as an Indicator of Water Quality in Streams Impacted by Mine Drainage
… occurring in acidic waters was primarily schwertmannite and goethite while near neutral watersformed ferrihydrite. The minerals comprising the sediments occurring at each pH mode are spectrally separable. Color indices and spectral angle mapping of the sediments correlated with stream …