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| Research on controlling factors of the mercury and mercury-zinc deposits in Cambrian Aoxi Formation of Fenghuang area, Hunan Province |
| FU Shengyun |
| Hunan Institute of Geological Survey, Changsha 410116, China |
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Abstract Fehuang mercury-lead-zinc ore field is located in central Hunan-Guizhou mercury belt, and several sedimentary-hot brine mercury and zinc ore spots occurred in Cambrian Aoxi Formation. In order to further search for mercury-zinc deposits, the regional metallogenic geological conditions, sedimentary facies and sedimentary evolution of Aoxi Formation were summarized, and the relationship between lithologic lithofacies and mercury, lead-zinc mineralization of Aoxi Formation was deeply studied, on the basis of previous data and field investigation. The results show that paleogeographic type of the rock facies of Aoxi Formation is the slope facies. The mercury and mercury-zinc deposits distributed roughly along the layer in calcite alteration of broken breccia between fine to fine-grained dolomitic strata in the upper member of Aoxi Formation, with a lateral distribution range of about 3-5 km. The mercury and mercury-zinc ore bodies appear to be layered, lenticular and capsule-like in the rubble dolomites and clastic dolomites. The related alteration types are carbonation and silication.
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Received: 01 August 2018
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2019, Vol. 6 
