Evidence of a Magmatic Intrusion in the Tim Mersoi Basin in Relation With Uranium Mineralizations

Abstract

The Tim Mersoi Basin is a very rich uranium basin. It is a basin that belongs to the Iullemenden syncline located in the northern part of Niger. Research work in recent years in this basin has revealed significant mineralization. The present study in this basin is based on the QEMSCAN and petrographic analysis of samples particularly highlighted during recent exploration campaigns. This study has shown that the basement of the sector is granitic in nature but the presence of an andesite intrusion has been revealed in this studied area. The presence of this andesite dyke has also shown a close link with uranium mineralization.

Accumulation of Uranium Mineralization in the Taza-Nord Prospect (Arlit, Northern Niger): Influence of Redox Parameters

“…This information is consistent with the results obtained from previous studies in the same concession ([1], [5], [8], [9]). Le gisement de Taza-Nord et les autres gisements de SOMAÏR forment une sorte de gouttière ( [10], [11]).…”

“…However, [8] highlights the metallogenic role of diagenetic and hydrothermal fluids. According to [8], and [10] the reduced carboniferous sedimentary formations to the east of the Arlit fault were brought into contact with oxidised permian formations. This led to the development of uranium deposits in the west by oxidation-reduction phenomena through the circulation of oxidising hydrothermal fluids (85 to 175°C) ( [6]- [8]).…”