The Shilu iron ore deposit is one of the highly economically important rich iron deposits in China. Based on the results of geological field studies, ore composition, and fluid inclusion research, it can be reasonably explained that the genesis of this iron deposit is from marine volcanic sedimentary deposition, followed by regional metamorphism and later hydrothermal fluid replacement. The temperatures of regional metamorphism range from 465° to 536°C, while those of later hydrothermal replacement range from 344° to 396°C. The later hydrothermal fluids seem related to the migmatization of Zhan Xian granite which occurs near the Shilu iron ore deposit. Due to the hydrothermal replacement, the original marine volcanic deposits were replaced and the ore became rich and concentrated.
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Yu, C., Lu, H. An investigation into the genesis of the Shilu iron deposit with special reference to its fluid inclusions. Geochemistry 2, 127–141 (1983). https://doi.org/10.1007/BF03180103
- Fluid Inclusion
- Hydrothermal Fluid