FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2051207945> ?p ?o ?g. }

• W2051207945 endingPage "415" @default.
• W2051207945 startingPage "395" @default.
• W2051207945 abstract "In the frame of the ENRESA natural analogue programme, the uranium ore from the “Mina Fe” (Salamanca, Spain) has been studied as a natural analogue of radioactive spent fuel behaviour. This uranium mine is hosted in highly fractured schistose rocks, a geological setting that has not been envisaged in the Spanish options for radioactive waste burial. However, some analogies with the processes that might be involved in the evolution of these geological repositories suggested this investigation. The pitchblende–pyrite–carbonate paragenesis has been studied “in situ” as natural analogue of the nuclear spent fuel behaviour under extremely oxidative dissolution conditions. Similarly, secondary Fe oxyhydroxides and clay minerals have also been considered as relevant analogue materials for the retention of uranium and other analogous trace metals. A multidisciplinary characterisation of the site has been performed in order to study these processes. Though the intense mining activities in the site hindered precise determination of the original hydrogeological and hydrochemical features of the investigated zone (Boa fault zone), the mineralogy and geochemistry of fracture fillings, mineralisation and associated clayey materials have allowed the geochemical evolution of the system to be established. Three geochemical zones have been clearly differentiated: (i) the oxidised zone, from the surface to approximately 20 m depth, (ii) the redox transition zone, from 20 to 50 m depth, and (iii) the reduced zone, located below the transition zone. The oxidised zone is characterised by the presence of the typical mineral association resulting from the strong acid conditions caused by the total oxidation of pyrite and other sulphides. The total oxidation, dissolution and leaching of U(IV), as uranyl–sulphate aqueous complexes, prevailed in this oxidised zone. The redox transition zone is characterised by the coexistence of the primary uranium paragenesis, oxidised minerals, as well as numerous secondary solid phases as a result of the physico-chemical changes in the environment. The optimal physico-chemical conditions for the coffinitisation of pitchblende and the co-precipitation of Fe(III)–U(VI) took place in this zone. In the reduced zone, where the primary uranium paragenesis is present, we currently find the necessary physico-chemical conditions to stabilise pitchblende, pyrite and carbonates. The physico-chemical conditions of the oxidised zone are not relevant to disposal conditions. In the transition zone, two main geochemical processes take place: (i) the coffinitisation of pitchblende, which may be an important process for the stability of spent fuel in reducing conditions, and (ii) the co-precipitation of the Fe(III) and U(VI) as oxyhydroxides, another relevant mechanism for the retention of uranium. The physico-chemical conditions that prevail below 50 m depth should be sufficient to stabilise a spent nuclear fuel repository, in the same way as they have been able to preserve the 34-Ma-old uranium deposit of the Mina Fe." @default.
• W2051207945 created "2016-06-24" @default.
• W2051207945 creator A5001175686 @default.
• W2051207945 creator A5013250630 @default.
• W2051207945 creator A5016320365 @default.
• W2051207945 creator A5020412048 @default.
• W2051207945 creator A5022495630 @default.
• W2051207945 creator A5026180402 @default.
• W2051207945 creator A5031409904 @default.
• W2051207945 creator A5046786084 @default.
• W2051207945 creator A5054223858 @default.
• W2051207945 creator A5066678520 @default.
• W2051207945 creator A5075694838 @default.
• W2051207945 date "2002-10-01" @default.
• W2051207945 modified "2023-10-16" @default.
• W2051207945 title "The uranium ore from Mina Fe (Salamanca, Spain) as a natural analogue of processes in a spent fuel repository" @default.
• W2051207945 cites W1497135932 @default.
• W2051207945 cites W1971417113 @default.
• W2051207945 cites W1976018342 @default.
• W2051207945 cites W2025780112 @default.
• W2051207945 cites W2028814010 @default.
• W2051207945 cites W2052142552 @default.
• W2051207945 cites W2077521389 @default.
• W2051207945 cites W2090321654 @default.
• W2051207945 cites W2135665849 @default.
• W2051207945 cites W2143908259 @default.
• W2051207945 cites W2156529959 @default.
• W2051207945 cites W2559025757 @default.
• W2051207945 doi "https://doi.org/10.1016/s0009-2541(02)00127-4" @default.
• W2051207945 hasPublicationYear "2002" @default.
• W2051207945 type Work @default.
• W2051207945 sameAs 2051207945 @default.
• W2051207945 citedByCount "32" @default.
• W2051207945 countsByYear W20512079452013 @default.
• W2051207945 countsByYear W20512079452014 @default.
• W2051207945 countsByYear W20512079452015 @default.
• W2051207945 countsByYear W20512079452016 @default.
• W2051207945 countsByYear W20512079452017 @default.
• W2051207945 countsByYear W20512079452018 @default.
• W2051207945 countsByYear W20512079452020 @default.
• W2051207945 countsByYear W20512079452022 @default.
• W2051207945 countsByYear W20512079452023 @default.
• W2051207945 crossrefType "journal-article" @default.
• W2051207945 hasAuthorship W2051207945A5001175686 @default.
• W2051207945 hasAuthorship W2051207945A5013250630 @default.
• W2051207945 hasAuthorship W2051207945A5016320365 @default.
• W2051207945 hasAuthorship W2051207945A5020412048 @default.
• W2051207945 hasAuthorship W2051207945A5022495630 @default.
• W2051207945 hasAuthorship W2051207945A5026180402 @default.
• W2051207945 hasAuthorship W2051207945A5031409904 @default.
• W2051207945 hasAuthorship W2051207945A5046786084 @default.
• W2051207945 hasAuthorship W2051207945A5054223858 @default.
• W2051207945 hasAuthorship W2051207945A5066678520 @default.
• W2051207945 hasAuthorship W2051207945A5075694838 @default.
• W2051207945 hasConcept C127313418 @default.
• W2051207945 hasConcept C13965031 @default.
• W2051207945 hasConcept C147789679 @default.
• W2051207945 hasConcept C151730666 @default.
• W2051207945 hasConcept C154401813 @default.
• W2051207945 hasConcept C16674752 @default.
• W2051207945 hasConcept C17409809 @default.
• W2051207945 hasConcept C178790620 @default.
• W2051207945 hasConcept C185592680 @default.
• W2051207945 hasConcept C187320778 @default.
• W2051207945 hasConcept C191897082 @default.
• W2051207945 hasConcept C192562407 @default.
• W2051207945 hasConcept C199289684 @default.
• W2051207945 hasConcept C26687426 @default.
• W2051207945 hasConcept C2776062231 @default.
• W2051207945 hasConcept C2776268066 @default.
• W2051207945 hasConcept C2776608160 @default.
• W2051207945 hasConcept C2779002002 @default.
• W2051207945 hasConcept C2780191791 @default.
• W2051207945 hasConcept C2780659211 @default.
• W2051207945 hasConcept C2781139676 @default.
• W2051207945 hasConcept C33556824 @default.
• W2051207945 hasConcept C35391346 @default.
• W2051207945 hasConcept C555451288 @default.
• W2051207945 hasConcept C7083945 @default.
• W2051207945 hasConcept C82844589 @default.
• W2051207945 hasConcept C88380143 @default.
• W2051207945 hasConcept C89690796 @default.
• W2051207945 hasConceptScore W2051207945C127313418 @default.
• W2051207945 hasConceptScore W2051207945C13965031 @default.
• W2051207945 hasConceptScore W2051207945C147789679 @default.
• W2051207945 hasConceptScore W2051207945C151730666 @default.
• W2051207945 hasConceptScore W2051207945C154401813 @default.
• W2051207945 hasConceptScore W2051207945C16674752 @default.
• W2051207945 hasConceptScore W2051207945C17409809 @default.
• W2051207945 hasConceptScore W2051207945C178790620 @default.
• W2051207945 hasConceptScore W2051207945C185592680 @default.
• W2051207945 hasConceptScore W2051207945C187320778 @default.
• W2051207945 hasConceptScore W2051207945C191897082 @default.
• W2051207945 hasConceptScore W2051207945C192562407 @default.
• W2051207945 hasConceptScore W2051207945C199289684 @default.
• W2051207945 hasConceptScore W2051207945C26687426 @default.
• W2051207945 hasConceptScore W2051207945C2776062231 @default.
• W2051207945 hasConceptScore W2051207945C2776268066 @default.

• next