Emplacement mechanism of the super-large Jingshan gold deposit in Jiangxi, China

Abstract

Jingshan superlarge gold deposit is a typical deposit closely related to the ductile shear zone, developing the economic enrichment during the transition form the ductile deformation to the brittle deformation. The ore-forming process of Jingshan Au deposit can be described as the development of marine volcanic-turbidity current Au-bearing initial sedimentation → regional metamorphism and the first enrichment → strong transformation of dynamic metamorphism and deformation→ore-controlling and ore-holding of ductile shear structure→supperimposed transformation and enrichment of magma-hydrothermal solution. This process can be summarized as the “source-migration-accumulation” metallogenic-geochemical process of Au. The proved Au reserve of this deposit has exceeded 100 t and its prospect of searching for ore is considerable. So it is called the only super-large gold deposit in the south of the lower reach of the Yangtze River, China.

Keywords

superlarge gold deposit / emplacement of deposit / ductile shear zone / Jiangxi

References

[1] LiPeizheng, WuYanzhi, LiuJishun. Output character and metallogeric geological setting of Northeast Jiangxi superlarge Au depositis. Journal of Central South University of Technology, 1995, 26(Suppl. 4): 153-157(in Chinese)

[2] WuYanzhi, LiPerzheng, Xuaijun, et al.. Analysis of metamorphism and deformation mechanism and metallogenic of Jingshan Au deposit in Jiangxi. Journal of Central South University of Technology, 1995, 26(Suppl. 4): 10-14(in Chinese)

[3] PengShenlin, YangMu, ChenXu, et al.. Rescarch of ore-forming of Jingshan Au deposit in Dexin, Jiangxi. Journal of Central South University of Technology, 1995, 26(Suppl. 4): 1-4(in Chinese)