Experimental Study of the Solubility of Uraninite in Granitic Melts and Fluid Solutions at High Pressures and Temperatures

Zharikov, V. A.; Ivanov, Ivan P.; Omel’yanenko, B. I.; Redkin, A. F.; Yudintsev, S. V.

doi:10.1080/00206818709466194

Cited by 14 publications

(5 citation statements)

References 2 publications

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“…A temperature drop is regarded as the main cause of ore deposition. This suggestion is consistent with experimental results on solubility of U(IV) complexes in haloid solutions (Zharikov et al, 1987;Red'kin et al, 1988;Peiffert et al, 1996).…”

Section: Introductionsupporting

confidence: 90%

Estimation of the time of magma chamber solidification beneath the Strel’tsovka caldera and its effect on the nonstationary temperature distribution in the upper crust, the eastern Transbaikal region, Russia

et al. 2008

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The hydrothermal Mo-U deposits of the Strel'tsovka ore field, unique in reserves, are localized in the Late Mesozoic caldera of the same name. The consideration of geochemical processes that controlled uranium transfer by ore-bearing fluids and its precipitation in orebodies has shown that a nonstationary temperature distribution could have exerted a substantial effect on ore formation. The temperature field in the Strel'tsovka caldera, which was caused by a shallow-seated magma chamber that existed beneath the caldera by the onset of the ore stage, was simulated by mathematical modeling. A one-dimensional nonstationary model of conductive heat transfer taking into account the latent heat of magmatic melt crystallization was used. The problem was solved with the finite difference method. It has been established that, at optimal parameters of the model, the magma chamber would have completely crystallized in 56 ka; the maximum estimate is 133 ka. Three million years after emplacement of the granitic intrusion, the related thermal anomaly in the upper crust should have disappeared. The results obtained indicate that granitic melt of this chamber could not have been a source of uranium-bearing solutions that formed deposits 5 Ma after the cessation of magmatic activity.

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Section: Introductionsupporting

confidence: 90%

Estimation of the time of magma chamber solidification beneath the Strel’tsovka caldera and its effect on the nonstationary temperature distribution in the upper crust, the eastern Transbaikal region, Russia

et al. 2008

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“…The melt/fluid partition coefficients for uranium determined in previous experimental studies carried out under conditions close to those accepted in this paper did not confirm appreciable accumulation of uranium in fluid (Peiffert et al, 1996;Zharikov et al, 1987;Yudintsev, 1990). Nevertheless, it was decided to repeat the experiment for the magma chamber beneath the Strel'tsovka caldera in order to refine the conditions determined to characterize separation of uranium from a particular magmatic melt.…”

Section: Introductionsupporting

confidence: 64%

Interaction of model F-bearing silicic melt with chloride fluid, uraninite, and columbite at 750°C and 1000–2000 bar and its implications for estimation of the ore-forming capability of the upper crustal magma chamber beneath the Strel’tsovka caldera, eastern Transbaikalia

et al. 2009

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The experimental study of an F-bearing silicic melt-U, Nb, Ta minerals-chloride-fluoride fluid system is focused on ascertaining the origin of uranium deposits spatially related to intraplate silicic volcanism. The first series of experiments on uranium solubility in silicic melts close in composition to ore-bearing rhyolite of the unique Strel'tsovka Mo-U ore field has been performed in order to determine more precisely the ore genesis. As starting solid phases, model homogeneous glass of the chemical composition (wt %) 72.18MgF 2 ); synthetic UO 2 and UO 3 и 0.33 H 2 O; and natural columbite were used. The starting solutions contained

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“…According to experimental results (Peiffert et al, 1996;Zharikov et al, 1987), the coefficient of uranium partitioning between haplogranitic melt and fluid indicates that the melt should be enriched in uranium and the fluid, depleted in this element.…”

Section: Discussionmentioning

confidence: 97%

Genesis and formation conditions of deposits in the unique Strel’tsovka Molybdenum-Uranium ore field: New mineralogical, geochemical, and physicochemical evidence

2007

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Experimental Study of the Solubility of Uraninite in Granitic Melts and Fluid Solutions at High Pressures and Temperatures

Cited by 14 publications

References 2 publications

Estimation of the time of magma chamber solidification beneath the Strel’tsovka caldera and its effect on the nonstationary temperature distribution in the upper crust, the eastern Transbaikal region, Russia

Estimation of the time of magma chamber solidification beneath the Strel’tsovka caldera and its effect on the nonstationary temperature distribution in the upper crust, the eastern Transbaikal region, Russia

Interaction of model F-bearing silicic melt with chloride fluid, uraninite, and columbite at 750°C and 1000–2000 bar and its implications for estimation of the ore-forming capability of the upper crustal magma chamber beneath the Strel’tsovka caldera, eastern Transbaikalia

Genesis and formation conditions of deposits in the unique Strel’tsovka Molybdenum-Uranium ore field: New mineralogical, geochemical, and physicochemical evidence

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