Raw materials used for the phosphate fertilizer production in Romania. New radiometric data.

Aurora-Maruta Iancu-Caraveteanu (1) , Delia-Georgita Dumitras (1) , Stephan Marincea (1) , Adriana Ion (1) , Essaïd Bilal (2, 3, 4) , Maria Angela Anason (1)

1 Department of Mineralogy
2 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
3 GSE-ENSMSE - Département GéoSciences et Environnement
4 EVS - Environnement, Ville, Société

Uranium, thorium and potassium were measured by low background gamma spectrometry in natural apatites used as raw materials in the phosphate fertilizer industry. The results confirmed that the phosphates of sedimentary origin ( i.e. the samples from Jordan and Morocco) have higher concentrations of uranium (98-119 ppm) and lower concentrations of thorium (21-31 ppm), while phosphates of magmatic origin ( i.e., Kola Peninsula, Rajasthan) are thorium-richer (40-117 ppm) and uranium-poorer (24-35 ppm).

Mots clés: phosphates; uranium; thorium; sedimentary; magmatic

Domaines: Génie des procédés; Géochimie; Milieux et Changements globaux

Aurora-Maruta Iancu-Caraveteanu, Delia-Georgita Dumitras, Stephan Marincea, Adriana Ion, Essaïd Bilal, et al.. Raw materials used for the phosphate fertilizer production in Romania. New radiometric data.. Romanian Journal of Mineral Deposits, 2012, 85 (1), pp.73-76. ⟨hal-00788976⟩