东昆仑哈日扎矿床斑岩-热液成矿特征及找矿远景  

Porphyry-Hydrothermal Metallogenic Characteristics and Prospecting Prospect of Harizha Deposit in East Kunlun

作　　者：马忠元 张爱奎 李军 马强 王磷 张彩霞 Ma Zhongyuan;Zhang Aikui;Li Jun;Ma Qiang;Wang Lin;Zhang Caixia(The Third Institute of Qinghai Geological Prospecting,Xining,Qinghai,810029,China)

机构地区：[1]青海省第三地质勘查院,青海西宁810029

出　　处：《新疆地质》2023年第4期538-546,共9页Xinjiang Geology

基　　金：青海省地质矿产勘查开发局自筹资金项目东昆仑斑岩成矿系统研究(SKYZC-2022-007)资助。

摘　　要：哈日扎矿床是东昆仑成矿带东段地区近年来发现的一处大型铜、铅、锌、银复合矿床,为研究该矿床矿化蚀变规律,在总结成矿地质背景和VI矿带矿床地质的基础上,探讨斑岩-热液成矿特征,分析深部找矿远景。研究表明,NW向断层控制的构造破碎带及岩石节理、裂隙是矿区主要储矿构造,热液脉型银多金属矿体由浅及深含矿脉逐渐变宽大,矿体呈似层状、脉状、透镜状,类型主要以银、铅、锌矿石为主。脉状矿底部出现青磐岩化-泥化-硅化蚀变分带,并出现黄铜矿,具斑岩型-浅成低温热液脉型成矿系列。利用广域电磁法测量在脉状矿深部1200~1400 m呈“囊”状低阻体,因此,深部寻找斑岩铜矿潜力巨大。Hariza deposit is a large copper-lead-Zinc-silver complex deposit discovered in the eastern part of East Kunlun metallogenic belt in recent years,In order to further study the regularity of mineralization alteration,on the basis of metallogenic geological background and the geology of VI ore zone.the characteristics of porphyry-hydrothermal mineralization are discussed,and the deep prospecting prospect is analyzed.The research shows that the tectonic fracture zone and rock joint fissure controlled by the NW fault are the main ore storage structures in the mining area.The hydrothermal vein type silver polymetallic ore body gradually becomes wider from shallow and deep veins,and the ore body is layered,vein-like and lens-like,and the ore type is mainly silver lead-zinc ore.At the bottom of the vein deposit,there is a zonation of cyanopialization,argillation,silication alteration,and chalcopyrite,with porphyry-epithermal vein type metallogenic series.The wide area electromagnetic method was used to measure the low resistance body of“capsule”in the depth of the vein deposit 1200~1400 m.Therefore,the deep search for porphyry copper deposit has great potential.

关 键 词：东昆仑 哈日扎 银多金属矿床 斑岩-热液成矿 广域电磁法测量 

分 类 号：P588.13[天文地球—岩石学]