Geological characteristics and uranium prospecting criteria of granite bodies in Menghuocheng Area, Shimian County, Sichuan Province

The research area is located at a 26° direction in Mianning County, Sichuan Province.The geological structure is located on the northern segment of the Kangdian axis, on the Luding Miyi arch, in the eastern part of the Anning River Yimen fault.The main manifestations are the Jinning period fold uplift and large-scale acidic magma emplacement, the Chengjiang period large-scale intermediate acidic volcanic eruption, and the eastern depression and Indosinian intermediate acidic magma emplacement in the northwest since the Caledonian period.Fold and fault structures are developed, and 5 granite type uranium mineralization points have been distributed in the area.