天峻县扎尔马格金多金属矿矿床特征与成矿机理

Characteristics and Metallogenic Mechanism of Zalmag Gold Polymetallic Deposit in Tianjun County

研究区大地构造位于秦祁昆造山系南祁连弧盆系的拉脊山蛇绿混杂带内,早石炭世臭牛沟组紫红色含岩屑砂岩是区内主要成矿地层;F1断裂处发育镜铁、金矿化体一条,F3断裂处发育铜矿体,是控矿构造;矿化主要受不同期次岩浆热液活动控制,区内铁、金矿化成因为热液型,铜矿成因为中低温热液充填型。地层、构造、岩浆岩等找矿标志比较明显,具有较好的找矿远景。

The geodectonic structure of the study area is located in Lajishan ophiolitic mixed zone of the South Qilian arc basin of Qinqin-Kun orogenic system.The purple-red lithic sandstone of Early Carboniferous Ou Niugou Formation is the main metallogenic stratum in the area.One of the mirror iron and gold is of mineralized bodies,the copper ore body is developed at the F3 fault,which is the ore-control structure.The mineralization is mainly controlled by the hydrothermal activities of the different stages of the secondary rocks.And the iron and gold mineralization in the area is formed because of the hydrothermal type and copper ore.It is due to the medium-low temperature hot liquid filling type.The prospecting signs,such as strata,structure and magmatic rocks,are relatively obvious,as have a good prospecting prospect.