摘要
当金山矿区位于秦祁昆造山系、中-南祁连弧盆系、南祁连岩浆弧。成矿区带处在秦祁昆成矿域、阿尔金-祁连(造山带)成矿省、南祁连Pb-Zn-Au-Cu-Ni-Cr成矿带、当金山加里东铅锌、石棉、蓝晶石、蛇纹岩成矿亚带上。矿区地处阿尔金走滑断裂带南侧,区内地层、构造、侵入岩呈北东东向展布,与区域性构造线方向一致。工业原料矿石代表了一种平静的沉积环境,而石英砂岩、钙质砂岩和绿泥千枚岩是在化学条件和沉积环境不稳定的潮坪和浅海条件下的沉积,确定该矿属于浅海相沉积。地表出露的矿体为直接找矿标志。为满足环境保护、生态平衡,防止水土流失,风景旅游等方面的需要,随着城镇建设规划的不断完善和落实,可供水泥原料的开采量逐渐减少,具有良好的社会经济效益。
Dangjinshan mining area is located in qinqikun orogenic system,Middle South Qilian arc basin system and South Qilian magmatic arc.The metallogenic belt is located in qinqikun metallogenic domain,Altun Qilian (orogenic belt) metallogenic province,South Qilian Pb Zn Au Cu Ni Cr metallogenic belt,dangjinshan Caledonian Pb Zn,asbestos,kyanite and serpentine metallogenic sub belt.The mining area is located in the south of the Altun strike slip fault zone.The strata,structures and intrusive rocks in the area are distributed in NE direction,which is consistent with the direction of regional structural line.Industrial raw material ore represents a calm sedimentary environment,while quartz sandstone,calcareous sandstone and chlorite phyllite are deposited under the unstable tidal flat and shallow sea conditions of chemical conditions and sedimentary environment,so it is determined that the ore belongs to shallow sea facies deposition.The ore body exposed on the surface is a direct prospecting indicator.In order to meet the needs of environmental protection,ecological balance,prevention of soil erosion,landscape tourism and other aspects,with the continuous improvement and implementation of urban construction planning,the amount of cement raw materials available for mining is gradually reduced,with good social and economic benefits.
作者
薛小文
XUE Xiao-wen(The Fourth Geological and Mineral Exploration Institute of Gansu Provincial Bureau of geological and mineral development,Jiuquan,Gansu 735000)
出处
《世界有色金属》
2020年第5期112-114,共3页
World Nonferrous Metals
关键词
当金山
工业原料
经济效益
dangjinshan
industrial raw materials
economic benefits
