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American Mineralogist

Journal of Earth and Planetary Materials

Ed. by Baker, Don / Xu, Hongwu / Swainson, Ian


IMPACT FACTOR 2018: 2.631

CiteScore 2018: 2.55

SCImago Journal Rank (SJR) 2018: 1.355
Source Normalized Impact per Paper (SNIP) 2018: 1.103

Online
ISSN
1945-3027
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Volume 83, Issue 3-4

Issues

Reactions of aqueous Au1+ sulfide species with pyrite as a function of pH and temperature

M.J. Scaini / G.M. Bancroft / S.W. Knipe
Published Online: 2015-11-13 | DOI: https://doi.org/10.2138/am-1998-3-415

Abstract

The reactivity of aqueous Au1+ sulfides with FeS2 at pH = 3 and 6 for temperatures of 25 and 90 °C has been investigated using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy with energy dispersive X-ray analysis (SEM/EDXA), and static secondary ion mass spectrometry (SSIMS). The presence of both Au1+ and metallic Au are observed upon the FeS2 surface. We show that Au deposition is increased at elevated pH or temperature; but the amount of Au deposited is far lower than in AuCl⁻4 solutions owing to the greater stability of Au(SH)1-xx complexes. This is the first evidence of Au1+ on pyrite from bisulfide solutions using XPS.

About the article

Received: 1997-03-31

Accepted: 1997-11-11

Published Online: 2015-11-13

Published in Print: 1998-03-01


Citation Information: American Mineralogist, Volume 83, Issue 3-4, Pages 316–322, ISSN (Online) 1945-3027, ISSN (Print) 0003-004X, DOI: https://doi.org/10.2138/am-1998-3-415.

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© 2015 by Walter de Gruyter Berlin/Boston.

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