Uranium isotopic distribution in the mineral phases of granitic fracture fillings by a sequential extraction procedure

In order to study the recent rock-water interaction processes in the El Berrocal site, a sequential leaching method has been applied to granitic fracture fillings to obtain the U isotopic distribution in the mineral phases of these samples. Based on the mineralogical composition of these materials,...

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Bibliographic Details
Published inApplied radiation and isotopes Vol. 47; no. 9; pp. 927 - 931
Main Authors Crespo, M.T., Pérez Del Villar, L., Jiménez, A., Pelayo, M., Quejido, A., Sánchez, M.
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.09.1996
Subjects
Microscopy, Electron, Scanning - methods
Microwaves
Minerals - analysis
Silicon Dioxide - analysis
Spain
Uranium - analysis
X-Ray Diffraction - methods
Spain
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Summary:In order to study the recent rock-water interaction processes in the El Berrocal site, a sequential leaching method has been applied to granitic fracture fillings to obtain the U isotopic distribution in the mineral phases of these samples. Based on the mineralogical composition of these materials, six dissolution steps have been chosen to extract U as exchangeable cation, from carbonates, amorphous Fe-oxyhydroxides, labile resistates and highly insoluble resistates. In this way, the processes involved in the rock-water interaction phenomena, mainly dissolution, precipitation, coprecipitation and adsorption can be distinguished and even approximately dated.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0969-8043
1872-9800
DOI:10.1016/S0969-8043(96)00089-9