Redistribution and fractionation of trace and rare earth elements during weathering and lateritization of orthogneiss in Ndokayo (Bétaré-Oya Gold District, South East Cameroon)

Guimapi, Nathaly Tsabze; Tixier, Paul; Tiomo, Idriss Franklin; Happi, Franklin Donald; Fotso, Alex Kengne; Tchaptchet, Christian William Tchaptchet

doi:10.1016/j.geodrs.2022.e00601

Cited by 4 publications

(1 citation statement)

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“…All the other samples compose a more homogeneous group. The samples presenting enrichment in LREE are probably related to the amount of kaolinite that is a detrital mineral, generally derived from highly weathered soils [30], since REE may be adsorbed as impurities or incorporated as substituting elements into the crystalline structure of this host minerals [31].…”

Section: P 11mentioning

confidence: 99%

Instrumental Neutron Activation Analysis (INAA) As-sessment of REE of Soil from Mining Site Umuahia, Abia State, South East, Nigeria

Onudibia,

Silva,

Essiett

et al. 2024

Braz. J. Rad. Sci.

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In this work, the main goal was to examine the REE concentration and distribution pattern in soil from Umuahia, Abia State, Southeast, Nigeria, in a clay mining site compared with a non-contaminated site approximately 3 km away. The REE were determined by Instrumental Neutron Activation Analysis (INAA) at IPEN, Brazil. The main mineralogy of the samples was determined by XRD. The following REE were determined: Ce, Eu, La, Lu, Nd, Sm, Tb and Yb. Soil samples from the mining area present quartz and kaolinite as their main constituents, with REE concentrations comparable with that of the Upper Continental Crust and the North American Shale Composite. The calculated Geoaccumulation index (IGeo) indicate that REE have natural origin and ∑LREEN/∑HREEN ratio show an enrichment of the light over heavy REE, in samples of the clay mining area.

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Section: P 11mentioning

confidence: 99%