The Saidu Gold Deposit of Southern Altai, China: Mineralizing Stages and Ore-Forming Fluids Evolution

Abstract:

The Saidu gold deposit is located in the northwest part of Ertix Tectonic Zone in Xinjiang. The ore bodies occur in altered mylonite zones within the Mar-kakol giant fault zone and are controlled by the ductile shear zone. The structural-metallogenic fluids of the early stage are characterized by mesothermal-hydrothermal CO₂-N₂-rich fluids, with homogenization temperatures of fluid inclusions being 252~408°C. The tectonic-metallogenic fluids at the middle stage are characterized by CO₂-H₂O fluids, with homogenization temperatures being 203~326°C. The fluids at the late stage were epithermal-mesothermal low salinity aqueous solutions, with homogenization temperatures being 120~221°C. The main gold mineralization was related to the post-orogenic extension environment, with the evolution characteristics corresponding to the evolution of shear zones.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 215-218
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.215
• Online since: August 2013
• Authors: Guo Rui Zhang*, Jiu Hua Xu, Li Hua Shan, Hui Zhang, Xiao Feng Wei
• Keywords: Fluid Inclusion, Mineralizing Stages, Saidu Gold Deposit

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DOI: 10.1016/s0024-4937(00)00038-4

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