Journal
JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA
Volume 98, Issue 8, Pages 1068-1073Publisher
SPRINGER INDIA
DOI: 10.1007/s12594-022-2125-8
Keywords
-
Categories
Funding
- Board of Research in Nuclear Sciences (BRNS) of Department of Atomic Energy, Government of India, Mumbai
Ask authors/readers for more resources
The Jahaz prospect in the North Delhi Fold Belt, Rajasthan, is characterized by uranium mineralization closely associated with deformed and metasomatized meta-sediments. Petrographic and electron microprobe studies reveal a complex mineral assemblage and evidence of brittle-ductile deformation. Fluid-induced alterations play a significant role in the formation of mineral assemblages, providing insights into the geological processes responsible for uranium mineralization.
Uranium mineralization in Jahaz prospect of North Delhi Fold Belt, Rajasthan is closely associated with deformed and metasomatized meta-sediments of Ajabgarh Group. Detailed petrographic and electron microprobe studies of bore-hole samples indicate that the host rocks consist of metamorphic mineral assemblage such as quartz-annite-muscovite-hornblende (magnesiohornblende - ferrohornblende) - anorthite-bytownite with almandine - staurolite-corundum- ilmenite. Brittle-ductile deformation is evident by brecciation, micro-folds and fracture filled micro-veinlets of quartz and calcite. Fluid induced alteration products are pennine-albite-phlogopite-orthoclase-sphene-rutile-actinolite-ferropargasite-sericite-calcite-apatite. Two types of albite are prominent, albite-1 formed by alteration of parent metamorphic plagioclase, whereas albite-2 is feathery and found to be in open spaces and formed by precipitation of sodium rich fluid. Sulfide minerals (pyrrhotite-chalcopyrite) are most common in albitized rocks and commonly associated with calcite. The above studies clearly indicate the geological processes responsible for the formation of metamorphic-metasomatic mineral assemblages in host rocks associated with uranium mineralization.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available