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一、区域及矿点地质概况晶质铀矿矿化点,位于东秦岭加里东褶皱带(前称“秦岭地轴”)西段。褶皱带中,秦岭群(前称太华群)变质岩系广泛出露,加里东混合交代片麻状花岗岩岩体、岩脉群发育其中,东西向压扭性构造是该区主要构造形迹。矿化区南缘,出露黑云斜长片麻岩、角闪黑云片岩等变质岩。矿化区内,火成岩广泛发育,以中粗粒钾质花岗岩为主,次为片麻状黑云母花岗岩、灰白色中细粒花岗岩。压扭性断裂构造发育,多属矿后断裂。
First, the regional and ore geological overview Crystal uranium mineralization point, located in the East Qinling Caledonian fold belt (formerly known as “Qinling axis”) of the western section. In the fold belt, the metamorphic rocks of the Qinling Group (formerly known as Taihua Group) are widely exposed. The Caledon mixed metamorphic granite plutons and dikes are developed in the dikes, and the crustal structure is the main tectonic trace of the area. The southern margin of the mineralized area exposes biotite plagioclase gneiss and hornblende cirrus schist and other metamorphic rocks. In the area of mineralization, igneous rocks are widely developed, mainly medium-sized granitic potash granites, secondary gneissic biotite granite and gray-white fine-grained granites. Fracture shear stress structure development, mostly belonging to ore fracture.