Abstract
Fluid inclusion research in Archean metamorphic rocks, Yanshanian granite and gold-bearing quartz veins shows that regional metamorphic fluids are high temperature and high saline, Yanshanian post-granitic fluids are CO2-bearing low saline, and ore-forming fluids are also CO2-rich low saline. In gold-barren/free parts of quartz veins in gold deposits, daughter mineral-bearing high saline inclusions retated with metamorphic fluids remained. This proclaims quartz veins hosting gold ores might have been formed in early metamorphism, and overlapped or mineralized by late Yanshanian gold-bearing fluids.
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Fan, H., Xie, Y., Zhao, R. et al. Dual origins of Xiaoqinling gold-bearing quartz veins: Fluid inclusion evidence. Chin. Sci. Bull. 45, 1424–1430 (2000). https://doi.org/10.1007/BF02886252
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DOI: https://doi.org/10.1007/BF02886252