河南登封白土沟重晶石矿矿床地质特征及成因探讨

Discussion on the Geological Characteristics and Genesis of Baotou Barite Deposit in Dengfen

登封白土沟重晶石矿体呈陡倾斜脉状赋存于构造破碎带中,其形态受构造带控制,成矿断裂主要为近东西向,断裂面呈舒缓波状特征,断裂带具膨大、收缩现象。矿体呈似层状、脉状、透镜状,多分布在距地表200m以浅。重晶石矿体中伴有方铅矿化,局部富集成铅矿体。通过分析认为矿床类型属中低温热液型脉状重晶石矿床。

The Baotou barite ore body is present in the structural fracture zone in the form of steeply inclined veins,and its shape is controlled by the structural zone.The metallogenic faults are mainly near east-west direction,the fracture surface has the characteristics of gentle waves,and the fracture zone has the phenomenon of expansion and contraction.The ore bodies are layered,vein-like,and lenticular,and are mostly distributed at a distance of less than 200 m from the surface.The barite ore body is accompanied by galena mineralization,which is locally rich in lead ore body.Through analysis,it is believed that the deposit type belongs to the middle-low temperature hydrothermal type vein-like barite deposit.