青海都兰诺木洪郭勒地区地球化学异常特征、找矿潜力及找矿效果  

Geochemical anomaly characteristics,prospecting potential and prospecting effect in Nuomuhongguole area,Dulan,Qinghai Province

作　　者：冶建虎 田滔 吴树宽 刘飞 郭海明 Ye Jianhu;Tian Tao;Wu Shukuan;Liu Fei;Guo Haiming(The Fifth Qinghai Geological Exploration Institute)

机构地区：[1]青海省第五地质勘查院

出　　处：《黄金》2023年第1期88-93,共6页Gold

基　　金：青海省地质勘查专项资金项目(202212047kc019)。

摘　　要：诺木洪郭勒地区位于东昆仑东段,属于伯喀里克—香日德Au-Cu-Pb-Zn-Fe-Ni-Ag-W-Mo-石墨-萤石-玉石-煤-花岗岩成矿亚带。该地区地层不发育,北西向断裂发育,岩浆岩主要有早二叠世、晚三叠世中酸性侵入岩,发育1处1∶2.5万水系沉积物综合异常(诺木洪郭勒GA5),异常面积大,主元素为Mo,异常组合元素为Cu、Au、Sb、W,其中Mo、Au、W异常具有三级浓度分带,各元素异常套合紧密,具备良好的成矿地质条件,通过初步异常查证,已圈出4条铜银金矿(化)体。对比巴隆岩金矿床认为,地质背景、破碎蚀变带、矿化特征相似,断裂为金等元素矿化的形成提供了运移通道和富集场所,热液活动特别是石英脉热液的贯入,为金等元素的活化迁移和富集提供了热能和运移介质。通过本次找矿工作,圈出的蚀变带、矿体规模数量均有所扩大,圈出5条矿(化)体,效果较好,说明该地区具有寻找与巴隆岩金矿床同类构造热液型金多金属矿床的找矿潜力。The Nuomuhongguole area is located in the east of East Kunlun and belongs to Bokalike-Xiangride Au-Cu-Pb-Zn-Fe-Ni-Ag-W-Mo-graphite-fluorite-jade-coal-granite sub-metallogenic belt.The strata are not developed in the area,and the NW trending fault structure is developed.The magmatic rocks mainly include the Early Permian and Late Triassic intermediate acid intrusive rocks,involving a 1∶25000 stream sediment comprehensive anomaly(Nuomuhongguole GA5).The anomaly area is large,and the main element is Mo.The anomaly combination elements are Cu,Au,Sb,and W.Among them,Mo,Au and W have a triple concentration zoning.Each of the element anomalies overlaps closely and has favorable ore-forming geological conditions.Based on preliminary anomaly verification,4 copper,silver,and gold ore(mineralized)bodies are delineated.Compared to Balong Rock Gold Deposit,the study thinks that the geological settings,fractured alteration zone,and mineralization characteristics are similar,that the fault provides transfer channels and enrichment space for elemental mineralization such as gold while thermal fluids activities,especially the injection of quartz vein thermal fluids,provides heat source and transfer media for the activation migration and enrichment of elements such as gold.Through the prospecting,the alteration zones delineated and ore body scales and numbers are all increased to some extent,delineating 5 ore(mineralized)bodies.The prospecting effect is good,indicating that the area has the potential for prospecting structural hydrothermal fluid gold polymetallic deposits similar to the Balong Rock Gold Deposit.

关 键 词：诺木洪郭勒 水系沉积物综合异常 铜银金矿(化)体 构造热液型 找矿潜力 找矿效果 

分 类 号：TD15[矿业工程—矿山地质测量]