The solubilities of brandholzite, [Mg(H2O)6][Sb(OH)6]2, and bottinoite, [Ni(H2O)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, Ca2Sb2O7, and bindheimite, Pb2Sb2O7, 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.
Pure and Applied Chemistry
The Scientific Journal of IUPAC
Ed. by Burrows, Hugh / Stohner, Jürgen
IMPACT FACTOR 2017: 5.294
CiteScore 2017: 3.42
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Dispersion of antimony from oxidizing ore deposits
Free Access
Keywords: antimony; bindheimite; bottinoite; brandholzite; exploration geochemistry; mobility; mopungite; romeite; soils; solubility
Conference
International Symposium on Solubility Phenomena and Related Equilibrium Processes (ISSP-13), International Symposium on Solubility Phenomena, ISSP, Solubility Phenomena, 13th, Dublin, Ireland, 2008-07-27–2008-07-31
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About the article
Published Online: 2009-08-04
Published in Print: 2009-08-04
Citation Information: Pure and Applied Chemistry, Volume 81, Issue 9, Pages 1547–1553, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: https://doi.org/10.1351/PAC-CON-08-10-21.
© 2013 Walter de Gruyter GmbH, Berlin/Boston.
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