内蒙古阿拉善盟叠布斯格金多金属矿地质特征与找矿规律

Geological characteristics and prospecting regularity of diebsge Gold polymetallic deposit in Alxa League,Inner Mongolia

工作区处于华北陆块北缘西段,新太古代活动大陆边缘裂谷带,区内构造十分发育,曾遭受多期次变质变形作用,断裂构造以脆性破碎为主,岩性主要为构造角砾岩、碎裂岩为主,少量构造片岩等。其东西向断裂具有韧性变形特征,规模大,切割深,具有多期活动特征,对地层和岩浆的展布有一定的控制作用;其次为北东向断裂构造,多充填有赤铁矿化碎裂岩、角砾岩,为本区的主要控矿构造,控制着本区的矿化蚀变带的方向。目前矿化蚀变带以金、锌矿化为主的中温热液型矿床。以及以铜、金、锌等少量金属矿物为主的中低温热液型矿床。

The working area is located in the western part of the northern margin of the north China block, the rift zone of the NEOARCHEAN active continental margin Lithology is mainly tectonic Breccia, cataclastic rock, a few tectonic schist and so on. The east-west trending faults are characterized by ductile deformation, large scale, deep cutting, and multi-stage activity, which control the distribution of strata and magma, followed by the NE trending faults filled with hematite cataclastic rocks and Breccia It is the main ore-controlling structure and controls the direction of mineralization alteration zone in this area. At present, gold-zinc mineralization is the main type of mesothermal deposit in mineralization alteration zone. As well as copper, gold, zinc and other small-scale metal minerals mainly in the low-temperature hydrothermal deposits.