Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Rare-Earths and Other Trace Elements in Uraninites


Affiliations
1 Atomic Minerals Division, Department of Atomic Energy, New Delhi, India
     

   Subscribe/Renew Journal


Abundances of the lanthanides, yttrium, scandium and 12 other elements in pegmatitic and hydrothermal uraninites from India and Massif Central, France, are presented and compared with those available in literature. The pegmatitic uraninites exhibit a selective, and the hydrothermal types a complete rare-earth assemblage with Gd markedly high in both. The La-Nd: Sm-Ho: Er-Lu ratio may serve as an index of fractionation. Pegmatitic uraninites show an abnormal distribution of La in excess of Ce. An explanation is offered for this.
Subscription Login to verify subscription
User
Notifications
Font Size

Abstract Views: 181

PDF Views: 2




  • Rare-Earths and Other Trace Elements in Uraninites

Abstract Views: 181  |  PDF Views: 2

Authors

A. V. Sankaran
Atomic Minerals Division, Department of Atomic Energy, New Delhi, India
T. K. Bhattacharyya
Atomic Minerals Division, Department of Atomic Energy, New Delhi, India
K. K. Dar
Atomic Minerals Division, Department of Atomic Energy, New Delhi, India

Abstract


Abundances of the lanthanides, yttrium, scandium and 12 other elements in pegmatitic and hydrothermal uraninites from India and Massif Central, France, are presented and compared with those available in literature. The pegmatitic uraninites exhibit a selective, and the hydrothermal types a complete rare-earth assemblage with Gd markedly high in both. The La-Nd: Sm-Ho: Er-Lu ratio may serve as an index of fractionation. Pegmatitic uraninites show an abnormal distribution of La in excess of Ce. An explanation is offered for this.