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TitleAn experimental investigation of the solubility and speciation of uranium in hydrothermal ore fluids
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorRempel, K U; Williams-Jones, A E; Fuller, K
SourceTargeted Geoscience Initiative 5, Grant Program interim reports 2018-2019; by Benn, D; Brenan, J MORCID logo; Fuller, K; Grondahl, C; Layton-Matthews, D; Leybourne, M I; Linnen, R; Martins, T; Milidragovic, DORCID logo; Moynihan, D P; Mungall, J E; Nixon, G T; Padget, C D W; Pattison, D R M; Rempel, K U; Scanlan, E J; Scoates, J S; Tsay, A; Voinot, A; Van Wagoner, N A; Weston, R; Williams-Jones, A E; Woods, K; Zajacz, Z; Geological Survey of Canada, Open File 8620, 2019 p. 68-73, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative 5, Grant Program interim reports 2018-2019
RelatedThis publication is related to An experimental investigation of the solubility and speciation of uranium in hydrothermal ore fluids
File formatpdf (Adobe® Reader®)
Subjectseconomic geology; geochemistry; Science and Technology; mineral deposits; uranium; hydrothermal deposits; ore mineral genesis; mineralization; modelling; uranium geochemistry; solubilities; hydrothermal systems; fluid dynamics; fluorides; phosphates; host rocks; precipitation; pressure-temperature conditions; Methodology
Illustrationsschematic diagrams; plots
ProgramTargeted Geoscience Initiative (TGI-5) Knowledge Management Coordination
Released2019 08 29
AbstractExperimental data on the mobility of uranium in hydrothermal fluids are required to accurately model the formation of uranium ore deposits. This study aims to conduct experiments on the solubility and speciation of U(IV) and U(VI) in fluoride- and phosphate-bearing solutions, as well as flow-through, fluid-rock interaction experiments designed to assess the optimal P-T-X conditions for U precipitation, which will be integrated into a comprehensive genetic model. Early work has focused on method development for the solubility and flow-through experiments. Preliminary experiments on UO2 solubility in 0.01 M F- solutions at 200°C produced concentrations of 1.76 to 3.92 ppm U, demonstrating the surprisingly high mobility of U(IV) and the importance of U fluoride complexes for ore-forming systems.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is a collaborative federal geoscience program that provides industry with the next generation of geoscience knowledge and innovative techniques, which will result in more effective targeting of buried mineral deposits. This compendium is the result of the Grant Recipients 2018-2019.

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