THE CONTROL MINERALIZATION CONDITIONS OF THE XINDIAN GOLD DEPOSIT

The gold mineralization of Xindian gold deposit are very distinctly controlled by structure activities. Gaixian formation of Liaohe group offered the base of mineralised material for the gold deposit. Following metamorphism caused by motive force of the metamorphised rocks of Gaixian formation,the material in rocks occurred differentiation and formed silicified quartz veins. In this process,the mineralization material are firstly migrated and riched. Afterly,the metamorphised rocks are metasomated and resoulted,and formed porphyroid biotite-granite. In the post-magmatic hydrothermal, a great quantity mineralization material are riched. The hydrothermal riched mineral filled shear structure and formed a large number veins or bodies,The stage of shearing contrast with the stage of mineralization. Shear structure is a factor controlled veins and sites and shape of the bodies.