Isotopic Evidence for Reductive Immobilization of Uranium Across a Roll-Front Mineral Deposit.

@article{Brown2016IsotopicEF,
  title={Isotopic Evidence for Reductive Immobilization of Uranium Across a Roll-Front Mineral Deposit.},
  author={Shaun T Brown and Anirban Basu and John N Christensen and Paul William Reimus and Jeffrey M. Heikoop and Ardyth M Simmons and Giday Woldegabriel and Kate Maher and Karrie L Weaver and James T Clay and Donald J DePaolo},
  journal={Environmental science & technology},
  year={2016},
  volume={50 12},
  pages={6189-98}
}
We use uranium (U) isotope ratios to detect and quantify the extent of natural U reduction in groundwater across a roll front redox gradient. Our study was conducted at the Smith Ranch-Highland in situ recovery (ISR) U mine in eastern Wyoming, USA, where economic U deposits occur in the Paleocene Fort Union formation. To evaluate the fate of aqueous U in and adjacent to the ore body, we investigated the chemical composition and isotope ratios of groundwater samples from the roll-front type ore… CONTINUE READING