汶上县白家店重晶石矿地质特征及成矿地质条件分析

研究区圈定2个矿带4个矿体,呈脉状或透镜状赋存于彩山、毛村断层破碎带内,其中Ⅰ-Pb+Ba①矿体是区内主要矿体,赋矿岩石为构造角砾岩、碎裂状奥长花岗岩、花岗斑岩,矿体呈脉状,BaSO₄含量30.75%~94.85%,平均含量56.97%,主要有重晶石化、萤石化、方铅矿化。分析了白家店重晶石区域地质背景、矿体地质特征、矿石质量、矿石类型、围岩蚀变、成矿地质条件,总结了找矿标志,预测了找矿靶区,为类似地区的重晶石找矿工作提供借鉴经验,对白家店重晶石矿深部及外围的进一步勘查具有指导意义。

Geological Characteristics and Metallogenic Geological Conditions of Baijiadian Barite Deposit in Wenshang County

Two ore belts and 4 ore bodies have been circled in the study area,which occurr in veinlike or lensliker in Caishan and Maocun fault shattered belt.Among them,No.ⅠPb+Ba①ore bodies is the main ore bodies in the area.It is structural breccia,fragmented oligoclase granite,granite porphyry.The ore body is veinshaped.The content of BaSO₄ is 30.75%~94.85%,and the average content is 56.97%.It mainly includes baritization,fluoritization,and galena mineralization.Based on the analysis of regional geological background,ore body geological characteristics,ore quality,ore type,wall rock alteration and metallogenic geological conditions in Baijiadian area,prospecting criteria has been summarized,and prospecting target area has been predicated.It will provide some references for the prospecting work in similar areas,and has important guiding significance for the exploration of barite in deep and surrounding areas in Baijiadian area.