湖南七宝山铜多金属矿床地质特征与找矿方向

浏阳七宝山铜多金属矿床是湖南迄今为止探明铜资源量规模最大的矿床。经过多年的开采,探明的矿产资源日趋枯竭,迫切需要寻找和发现新的矿产资源。通过对矿床特征及成矿条件以及成矿规律的总结和研究,表明该矿床类型以矽卡岩型为主,其次为裂隙充填型、蚀变岩体型及风化淋滤型。成矿明显受地层、构造、岩浆岩控制,与花岗斑岩及石英斑岩成矿关系最为密切。矿化分带现象较明显,以岩体为中心向四周,成矿由高温向中低温变化。岩浆岩、围岩蚀变和物化探异常为区内重要的找矿标志。进而指出,矿区成矿地质条件良好,找矿潜力较大,下步找矿方向应是矿区的深边部及沿东西向断裂延伸方向。

Geological characteristics of Qibaoshan Cu-polymetalic deposit in Hunan Province and its prospecting orientation

Qibaoshan deposit which located in Liuyang City is the largest Cu-polymetalic mine in Hunan province at present. It's drained gradually after exploit for the past many years and seek and find more mineral re-sources here becoming imperative, through the research on the metallogenitic condition and regulation of this de-posit, we find the major ore-forming type here is skarn, apart from this, fracture filling, alteration and weathering are also common metallogeny patterns in this deposit. The formation of this deposit is clearly affected by stratum, structure and igneous rocks, and closest related to granite porphyry and quartz porphyry. The mineralized zone clearly shows that mineralization temperature turns high to low from the center of rock-body. Igneous rocks, wall rock alteration, geophsical and geochemical anomaly here are always very important indication for prospecting in mining area. Comprehensive study shows that this deposit with excellent conditions for mineralization has bright future for ore prospect and extend direction of east-west faults and the depth and adjacent of mining districts are best place to mineral prospecting.