山东乳山蓝家庄金矿床地质特征及找矿标志分析

Analysis of the geological features and prospecting signs of the Lan-Jiazhuang gold deposit in Shandong Dairy Mountain

蓝家庄金矿床位于胶西北地区之牟平—乳山金成矿带南段,区域成矿地质条件优越,具有巨大的找矿潜力。研究表明:蓝家庄金矿床受近南北向及次级断裂体系控制明显,矿体多呈脉状,具有分支复合、膨大狭缩现象;矿床围岩蚀变发育,具有蚀变叠加发育的特征,尤其是区域性金银综合异常分布区域与断裂构造、黄铁绢英岩化叠加是重要的找矿标志,也是重要的找矿靶区;此外,矿化蚀变带中常伴随其他金属硫化物,是重要的间接找矿标志。

The Lan-Jiazhuang gold deposit is located in the southern section of the Muping-Sein gold-forming belt in the northwest region of Shandong,and the geological conditions of regional mineralization are superior and have great prospecting potential.The research shows that the gold deposit in Lanjiazhuang is controlled by the near north-south and secondary fracture system,the ore body is pulsed,has branch compound,puffing and narrowing phenomenon,the ore deposit is the corrosion and development,has the characteristics of erosion superposition development,especially the regional gold and silver comprehensive abnormal distribution area and fracture structure,the yellow iron yingyanyan rock superposition is an important finding mark.It is also an important mining target area,and in addition,mineralization erosion belt is often accompanied by other metal sulphides,which is an important indirect mining mark.