@article{fdi:010064187,
  title = {{U}ranium migration and retention during weathering of a granitic waste rock pile},
  author = {{B}oekhout, {F}. and {G}{\'e}rard, {M}artine and {K}anzari, {A}. and {M}ichel, {A}. and {D}{\'e}jeant, {A}. and {G}aloisy, {L}. and {C}alas, {G}. and {D}escostes, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study investigates the post-mining evolution of {S}-type granitic waste rocks around a former uranium mine, {V}ieilles {S}agnes ({H}aute {V}ienne, {NW} {M}assif {C}entral, {F}rance). {T}his mine was operated between 1957 and 1965 in the {L}a {C}rouzille former world-class uranium mining district and is representative of intragranitic vein-type deposits. 50 years after mine closure and the construction and subsequent re-vegetation of the granitic waste rock pile, we evaluate the environmental evolution of the rock pile, including rock alteration, neo-formation of {U}-bearing phases during weathering, and {U} migration. {V}ertical trenches have been excavated through the rock pile down to an underlying paleo-soil, allowing the investigation of the vertical differentiation of the rock pile and its influence on water pathways, weathering processes and {U} migration and retention. {A}renization dominantly drives liberation of {U}, by dissolution of uraninite inclusions in the most alterable granitic minerals (i.e. {K}-feldspar and biotite). {R}etention of {U} in the matrix at the base of the waste rock pile, and in the underlying paleo-soil most likely occurs by precipitation of (nano-) uranyl phosphates or a combination of co-precipitation and adsorption reactions of {U} onto {F}e (oxy) hydroxides and/or clay minerals. {E}ven though {U}-migration was observed, {U} is retained in stable secondary mineral phases, provided the current conditions will not be modified.},
  keywords = {{FRANCE}},
  booktitle = {},
  journal = {{A}pplied {G}eochemistry},
  volume = {58},
  numero = {},
  pages = {123--135},
  ISSN = {0883-2927},
  year = {2015},
  DOI = {10.1016/j.apgeochem.2015.02.012},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064187},
}