Lithologic features and Uranium possibilities of the granites of Pupule, Adamawa Massif N.E. Nigeria

I V Haruna

doi:10.4314/gjgs.v15i1.5

Abstract

Preliminary lithologic and uranium investigation conducted in Pupule and environs to investigate further the area of uranium mineralisation in the neighbouring district revealed that the area is not attractive for further uranium search. Geologic field mapping shows that the area like most other parts of the region is underlain predominantly by fine-grained granites, equigranular granites and porphyritic granites. Data obtained from the radiometric investigation indicate fairly enhanced radiometric values of only 200 cps above the background counts of 100 cps. Data treatment and interpretation of the result suggest that the fairly enhanced radioactivity in the fine-grained granite, southeast of Pupule, may be related to high background values rather than concentration of uranium minerals in this rock that may justify further more detailed investigation.

Highlights

Nigeria does lie in the same region with countries in which uranium exploration has produced encouraging results but shares common boundary with these countries
According to a Joint Report by the Organisation for Economic Co-operation and Development (OECD) (2014), uranium exploration began in Niger Republic in 1956 in the Arlit area and by 1957 it has yielded the first discovery in the sandstone at Azelik
This is in sharp contrast with similar rocks with inclusions occurring as irregular bodies and as vein-like lenses within the equigranular granite having sharp contact relationship around Monkin in the far southern part of the study area

Summary

Introduction

Nigeria does lie in the same region with countries in which uranium exploration has produced encouraging results but shares common boundary with these countries. Nigeria is bordered by Niger Republic in the northern part and by Chad Republic in the northeasthern part (Fig. 1) In both countries, uranium exploration has led to economic discoveries. According to a Joint Report by the Organisation for Economic Co-operation and Development (OECD) (2014), uranium exploration began in Niger Republic in 1956 in the Arlit area and by 1957 it has yielded the first discovery in the sandstone at Azelik. Encouraged by this discovery, further studies of the sandstone resulted in the discoveries of Abokurum, Madaouela, Arlette, Ariege, Artois and Taza, Imouraren and Akouta deposits.

Methods

Results

Discussion

Conclusion