Analysis on the ore controlling factors and geological features of Shixingling tin mining area in Changning city,Hunan province

The Shixingling tin deposit,agreisen mineralization type,is located in the Dayishan granite body.The study is focus on the geological characteristics,ore controlling factors with the analysis of vein structure,magmatite,alteration,etc.Chenzhou-Shaoyang deep fracture zone in NW and fracture fault of Dayishan trend tectonic belt formed a metallogenic system of which deep fault as ore controll regional faults as lead ore structure,and the secondary faults as ore bearing structure.The magmatite,especially the advanced medium head unit of the ore-forming mother rock,is closely related to the formation of ore bodies.It provided ore-forming material and heat source as well.