[en] This meeting of the French Geological Society (SGF) was organized with the joint contribution of Areva, CNRS-INSU, PACEN, GUTEC, IDES, and Paris-Sud University. This document gathers the abstracts of the following 40 presentations: 1 - Uranium deposits of 'Intrusive'-type; 2 - U deposits beneath discordance: analogy with F-Ba-Pb-Zn(Ag) 'Basin Hosted'-type deposits?; 3 - Clays and related minerals as guides for uranium deposits prospecting: status of recent advances; 4 - Hudsonian Uranium mineralizations in the Western part of the Trans-Hudsonian orogen (Saskatchewan, Canada): a source for the formation of discordance-type deposits?; 5 - U-Th elements mobilization during the Panafrican metamorphism: implication on the formation of Cu-Co-(U) deposits, Solwezi dome, NW Zambia; 6 - Fractures network characterization by seismic and electrical anisotropy; 7 - study of uranyl speciation by Raman spectroscopy in chlorinated solutions (LiCl = 0.5 to 15 M) up to 350 deg. C. Metallogenic consequences and perspectives; 8 - Experimental weathering of natural monazite in the conditions of formation of Oklo and discordance-type uranium deposits; 9 - Disturbance of the U-Th-Pb chronometers during the low temperature weathering of monazite: synergy between irradiation damages and dissolution-precipitation; 10 - U(VI) interaction with humic substances: speciation and application to independent data; 11 - Preparation and characterization of Th_1-xU_xSiO₄ solid solutions: towards the understanding of coffinite formation?; 12 - A new geochemical tool for the study of U deposits: the anions in uraninite; 13 - Tectonics in the Unegt basin (E-Gobi, Mongolia): deformation stripes, hydrocarbons migration and U mineralizations; 14 - Study of U sources in the Erlian Basin (China); 15 Thermodynamic data acquisition for uranyl phosphates and vanadates: from synthetic analogues to natural samples; 16 - U speciation in Nopal I opals: geochemical consequences for the end of the deposit genesis; 17 - U distribution and valence in phosphorites; 18 - Nuclear industry and a 'uranium peak'?; 19 - Geologic context of the primary U deposits of the Damara orogenic belt (Namibia): from the migmatitic source to the plutonic deposit; 20 - U distribution in an Archean granite: from the batholith to the thin section; 21 - Mineralogical, geochemical and hydrochemical zoning of a roll-front in Kazakhstan: recent data and interpretations; 22 - Carbonated facies in silico-clastic series of roll-type U deposits of Kazakhstan: mineralogical, geochemical and isotopic data; 23 - 3D modeling of Muyunkum uraniferous deposit, Kazakhstan; 24 - From the stratigraphic model to the 3D geologic modeling of roll-front systems in Kazakhstan; 25 - U deposits in the tectonic-sedimentary evolution of the Franceville basin (Gabon); 26 - From Talak to Teleflak (Madaouela, Arlit Niger): analysis of the key events for the understanding of the evolution of the region during the Visean and of the related mineralizations in the Guezouman; 27 - Contribution of clays in the understanding of the sedimentary context at the base of the Athabasca basin in the Shea Creek deposit area (W Athabasca, Saskatchewan, Canada); 28 - Clayey weathering and related uraniferous mineralizations along the Kiggavik-Andrew Lake structural cluster (Nunavut, Canada); 29 - About the U deposits of rhyolitic origin: Xiangshan /Jiangxi (China), Sierra Pena Blanca/ Chihuahua (Mexico) and Lodeve/Herault (France); 30 - U and Th L/L extraction: role of water in their solvation sphere in organic environment; 31 - New uranium concentrate precipitation process to increase the bulk concentrate density; 32 - Grain-size study of natural phosphates from Morocco 'Oulad Abdoun Basin': distribution, quantifying of natural radionuclides and genesis implication; 33 - Phosphoric acid uranium content valorization; 34 - Development of a direct coupling system between an instrumented column and an ICP-MS: application to uranium migration in a sand column in the presence of humic acids; 35 - U speciation and stability factors in the Cominak mining wastes (Niger); 36 - IMOURAREN - leaching tests and analcimes specificity; 37 - Modeling of U ore acid leaching tests, application to in-situ recovery; 38 - Role of detrital pyrites in U concentration in the meso-Archean Pongola basin (2.9 Ga, South Africa); 39 - The role of black chert pebbles in uranium mineralisation in conglomerates of the basal Mozaan Group (Pongola basin, South Africa); 40 - U hydrothermal alteration and leaching in the Questembert granite (Massif Armoricain, France)