Dispersion of antimony from oxidizing ore deposits
- Diemar, Glen A. 1School of Natural Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC NSW 1797, Australia
- Filella, Montserrat 2Département de Chimie Minérale, Analytique et Appliquée, Université de Genève, Quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland
- Leverett, Peter 1School of Natural Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC NSW 1797, Australia
- Williams, Peter A. 1School of Natural Sciences, University of Western Sydney, Locked Bag 1797, Penrith South DC NSW 1797, Australia
Published in:
- Pure and Applied Chemistry. - Walter de Gruyter GmbH. - 2009, vol. 81, no. 9, p. 1547-1553
English
The solubilities of brandholzite, [Mg(H2 O)6 ][Sb(OH)6 ]2 , and bottinoite, [Ni(H2 O)6 ][Sb(OH)6 ]2 , at 25 °C in water have been measured. Solubilities are 1.95(4) × 10-3 and 3.42(11) × 10-4 mol dm-3 , respectively. The incongruent dissolution of romeite, Ca2 Sb2 O7 , and bindheimite, Pb2 Sb2 O7 , at 25 °C in 0.100 mol dm-3 aqueous HNO3 was also investigated. Equilibrium dissolved Sb concentrations were 3.3 ± 1.0 × 10-7 and 7.7 ± 2.1 × 10-8 mol dm-3 , respectively. These values have been used to re-evaluate the geochemical mobility of Sb in the supergene environment. It is concluded that the element is geochemically immobile in solution and in soils. This was in part validated by an orientation soil geochemical survey over the Bayley Park prospect near Armidale, New South Wales, Australia. Anomalous soil Sb levels are confined to within 100 m of known stibnite mineralization.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1351/pac-con-08-10-21
- ISSN 1365-3075
- Persistent URL
- https://sonar.ch/global/documents/53296
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