Bullock, Liam A.Parnell, John2017-07-262017-07-262017-09Bullock, L A & Parnell, J 2017, 'Selenium and molybdenum enrichment in uranium roll-front deposits of Wyoming and Colorado, USA', Journal of Geochemical Exploration, vol. 180, pp. 101-112. https://doi.org/10.1016/j.gexplo.2017.06.0130375-6742http://hdl.handle.net/2164/8998Acknowledgements The authors wish to thank Cal VanHolland, Jim Bonner and John Cooper of Ur-Energy (Casper, Wyoming) for their assistance with sampling, data provision and feedback. We are grateful to Adrian Boyce and Alison McDonald of the Isotope Community Support Facility at SUERC for technical support with isotope sample preparation and analyses. Critical comments that greatly improved the manuscript from Samuel Spinks and Marat Abzalov are gratefully acknowledged. Funding This research was supported by a grant from the Natural Environment Research Council (NERC) (NE/M010953/1).122324275engSeleniumMolybdenumRoll-frontsTelluriumUraniumWyomingQE GeologyNatural Environment Research Council (NERC)NE/M010953/1QEJournal article10.1016/j.gexplo.2017.06.013180