Transport and deposition of uranium in hydrothermal ore fluids as exemplified by Uranium Deposit 302 |
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Authors: | Jin Jingfu Hu Ruizhong |
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Institution: | (1) Chengdu College of Geology, China |
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Abstract: | Uranium Deposit 302 is a large hydrothermal uranium deposit occurring in fault zones within a granite. Pitchblende is the
only primary uranium mineral found in the ore. The associated minerals include quartz, fluorite, hematite and pyrite.
This paper focusses on the mechanism of transport and deposition of uranium in hydrothermal oreforming solutions responsible
for the deposit. It is concluded that uranium might be not only oxidized in a relatively reducing environment, but also reduced
in a relatively oxidizing environment, depending on the speciation of uranium in the solutions. The formation of pitchblende
is closely related to uranium reduction at the stage of uranium mineralization. |
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Keywords: | |
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