西天山哈尔嘎嘎林恩铜金矿床地质特征及综合找矿模型

哈尔嘎嘎林恩铜金矿床位于西天山阿吾拉勒铁-铜-金多金属成矿带东段,矿区下石炭统艾肯达坂组地层大面积出露,海西晚期闪长岩类分布广泛,NNW向及NW向断裂构造发育。目前已发现的6个铜及铜金矿体均产于艾肯达坂组火山碎屑岩中,主要矿石矿物为黄铜矿、斑铜矿及辉钼矿。钾化、黄铁绢英岩化、青磐岩化等蚀变发育,具斑岩型矿床围岩蚀变典型分带特征。1∶1 000地质-化探剖面测量结果表明,Cu、Au、Mo、Ag等元素含量变化趋势一致且与矿(化)体及钾化蚀变吻合较好;瞬变电磁及磁法测量结果均指示Ⅱ、Ⅲ号矿体SE端深部可能存在隐伏岩体。根据矿床地质、地球化学和地球物理特征,构建了综合找矿模型,并对区内下一步找矿方向进行了预测,认为区内寻找斑岩型多金属矿床的潜力巨大,勘探重点为瞬变电磁高阻异常、正磁异常及化探组合异常叠加区域3 000m标高以下地段。 

Geological Characteristics and Comprehensive Prospecting Model of the Haergagalinen Copper-Gold Deposit,Western Tianshan

The Haergagalinen copper-gold deposit is located in the eastern Awulale Fe-Cu-Au metallogenic belt in western Tianshan.The strata in the mining area are mainly Lower Carboniferous Aikendaban Formation.The igneous activity mainly brings Late Variscian diorites with the main structures here NNW and NW tending faults.At present,6copper and copper-gold ore bodies have been found in athrogene of Aikendaban Formation,whose ore minerals are mainly chalcopyrite,bornite and molybdenite.Alterations in the mining area are very extensive and in conspicuous zonation as same as the porphyry deposits.The 1∶1 000geology-geochemistry section explorations reveal the unanimous change of the element of Cu,Au,Mo,Ag,which is in register with the ore bodies and alliterated belts.The results of TEM and the magnetic survey show that there speculated to be ore-bearing porphyries in the deep of the SE area of orebody II &III.Information is extracted by summarizing the characters of geology,geochemistry and geophysics of the mining area.The authors build acomprehensive prospecting model to analyze the next prospecting direction,then prospect that there is huge potential for exploring the porphyry polymetalic deposit in this region by summarizing the geological,geochemical and geophysical characters of the deposit.The target area should be lower than 3 000 mof the high resistance of TEM,magnetic anomaly and abnormal elements groups superimposed region.