REE geochemistry of ore zones in the Archean auriferous schist belts of the eastern Dharwar craton, south India

Journal of Earth system science

T S Giritharan1 2¹  V Rajamani1¹ 

[1] School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067.$$

关键词: REE geochemistry;    Archean;    lode gold deposit;    eastern Dharwar Craton;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The eastern Dharwar Craton of southern India includes at least three ∼2700Ma supracrustal belts (schist belts) which have mesothermal, quartz-carbonate vein gold mineralization emplaced within the sheared metabasalts. In the Hutti and the Kolar schist belts, the host rocks are amphibolites and the ore veins have been anked by only a thin zone of biotitic alteration; in the Ramagiri belt, however, the host rocks to the veins have been a ected by more extensive but lower temperature alteration by uids. The rare earth element (REE) geochemistry of the host metabasalts, alteration zones, ore veins and the bulk sulfides separated from the ore veins and the alteration zones suggest thatthe REE chemistry of the immediate host rocks has been modified by uids which added LREE,

【 授权许可】

Unknown