山东蓬莱双山萤石矿地质特征及找矿方向

蓬莱双山萤石矿位于胶北突起的中部,区内地层不发育,断裂构造发育,分为北北东向和近东西向两组,在北北东向区域性断裂之间的近东西向张性断裂,是良好的导矿和容矿构造。区内岩浆岩广泛发育,期次多,以早白垩世伟德山序列任家沟单元为主体。区内共圈定3条萤石矿脉,赋存在断裂带硅化角砾岩内,呈脉状沿东西向断裂带展布。该矿床的成因类型属浅成中低温热液裂隙充填脉型萤石矿床。

The Shuangshan Mountain fluorite deposit in Penglai is located in the middle of Jiaobei protuberance.The strata in the area are not developed and the fault structure is developed.It is divided into two groups: the north-north-east direction and the near east-west direction.The near east-west extensional faults between the north-east regional faults is a good ore-guiding and ore-bearing structure.Magmatic rocks are widely developed in the area,with many stages,with Renjiagou unit of the Early Cretaceous Period Weide Mountain sequenceas the main body.There are three fluorite veins in the area,which occur in the silicified breccia of the fault zone and distribute along the east-west fault zone in the form of veins.The genetic type of the deposit belongs to the shallow medium-low temperature hydrothermal fissure filling vein fluorite deposit.