STABILITY AND SOLUBILITY OF ARSENOPYRITE, FEASS, IN CRUSTAL FLUIDS
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dc.contributor.author | Pokrovski G.S. | |
dc.contributor.author | Kara S. | |
dc.contributor.author | Roux J. | |
dc.date.accessioned | 2021-09-25T08:10:35Z | |
dc.date.available | 2021-09-25T08:10:35Z | |
dc.date.issued | 2002 | |
dc.identifier | https://elibrary.ru/item.asp?id=13928395 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 2002, 66, 13, 2361-2378 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/30584 | |
dc.description.abstract | The stability and solubility of natural arsenopyrite (FeAsS) in pure water and moderately acid to slightly basic aqueous solutions buffered or not with H2 and/or H2S were studied at temperatures from 300 to 450°C and pressures from 100 to 1000 bar. The solubilities of FeAsS in pure water and dilute HCl/NaOH solutions without buffering are consistent with the formation of the As(OH)3⁰(aq) species and precipitation of magnetite. At more acid pH (pH ≤2), arsenopyrite dissolves either stoichiometrically or with formation of the As-FeAsS assemblage. In H2S-rich and H2-rich aqueous solutions, arsenopyrite dissolution results in the formation of pyrrhotite (±pyrite) and iron arsenide(s), respectively, which form stable assemblages with arsenopyrite. | |
dc.title | STABILITY AND SOLUBILITY OF ARSENOPYRITE, FEASS, IN CRUSTAL FLUIDS | |
dc.type | Статья |
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