%0 Journal Article
%T Shear-Controlled Gold Mineralization of G. R. Halli Area of Chitradurga Schist Belt, Dharwar Craton: Insights from Fluid Inclusion Study
%A Govindappa Gopalakrishna
%A Mohamed Shareef
%A Poorigali Chowdaiah Nagesh
%J Open Journal of Geology
%P 662-673
%@ 2161-7589
%D 2018
%I Scientific Research Publishing
%R 10.4236/ojg.2018.87039
%X Gold mineralization at G. R. Halli is located along the Central shear zone of Chitradurga schist belt, extending from west of Gonur, through east of G. R. Halli and C. K. Halli to east of Honnemardi, roughly parallel to stratigraphic units. The NNW-SSE trending shear zone has a width of 0.5 to 1.5 km shows extensive carbonatization of metabasalts and the associated lithologies confined to NNW-WNW trending arcuate brittle-ductile zone. The sheared and silicified contact zones between carbonaceous argillite and schistose metabasalt form the potential sites for localization of mineralization. The gold is associated with sulphides mainly pyrite, arsenopyrite, galena, sphalerite, minor chalcopyrite. Textural relationship indicates two stage sulphide mineral assemblages co-relatable with two stage fluid ascents having temperature of homogenization between 125<span style=\"white-space:nowrap;\">&amp;#176;</span>C and 256<span style=\"white-space:nowrap;\">&amp;#176;</span>C. It is a typical epigenetic lode gold system, which got affected by later deformation.
%K G. R. Halli
%K Chitradurga Schist Belt
%K Dharwar Craton
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=86071