Geological Characteristics and Genesis of the Nanyangshan Sb Deposit in Lushi County,Henan Province

As a part of the Wulichuan antimony metallogenic belt,the Nanyangshan deposit is a hydrothermal deposit,with ore bodies distributed within faults south of the Shuanghuaishu fault zone. By field observation,microscope image analysis and trace element analysis,this work analyzed geological characteristics and genesis of the Nanyangshan deposit. The ore in this deposit can be divided into three types: brecciated ore,crumby ore,and filling nervation ore,of which the brecciated ore is dominant. The ore mineral can be divided into stibnite and valentinite,and the main ore mineral is stibnite.The stibium of ore-forming elements mainly originated from the rock of the Qin Ling Group and sulfur from the deep magma. These ore-controlling fault zones are connected with the Shuanghuaishu fault zone at depth. The hydrothermal solution migrating along with the Shuanghuaishu fault flowed to these ore-controlling fault zones as bifurcation,and ore-forming elements continued to pool in the Qin Ling Group,and accumulated at favorable localities. This recognition might have significance for the exploration of blind ore bodies in the Nanyangshan deposit,and is also a reference for seeking new ore bodies in the Wulichan antimony metallogenic belt.