青海昆仑河地区金钨矿床成矿规律及找矿方向  

Metallogenic regularity and prospecting direction of gold and tungsten deposits in Kunlunhe area,Qinghai Province

作　　者：逯永卓 王泰山 郑英[1,2] 张尧 徐贝贝[1,2] LU Yongzhuo;WANG Taishan;ZHENG Ying;ZHANG Yao;XU Beibei(Key Laboratory of Geological Processesand Mineral Resources in the Northern Qinghai-Tibet Plateau,Xining 810012,Qinghai,China;Qinghai Geological Survey Institute,Xining 810012,Qinghai,China)

机构地区：[1]青藏高原北部地质过程与矿产资源重点实验室,青海西宁810012 [2]青海省地质调查院,青海西宁810012

出　　处：《矿产勘查》2020年第10期2109-2116,共8页Mineral Exploration

基　　金：青海省地质勘查基金项目(编号:2017042008ky008)资助。

摘　　要：昆仑河地处东昆南Au-Cu-Co成矿带,已发现有大灶火、黑刺沟、铜金山等为代表的金矿床(点),新发现有二道沟、万保沟等钨矿床。文章通过对昆仑河地区的地质背景、金、钨矿床特征的总结梳理,从沉积建造、构造变形、岩浆作用、地球化学分带、空间分布等方面分析了区内金钨成矿规律与找矿方向。提出了昆仑河地区的金、钨最终成矿均与晚印支期及紧随其后的一期岩浆作用有关,钨矿为岩浆近中心相形成的中高温热液矿床,金矿为远程相中低温热液叠加矿床;认为钨矿找矿应结合化探异常,并侧重于晚三叠世花岗岩体附近,金矿在钨矿周边及北西西向构造变形带中找矿潜力较大。Kunlunhe is located in the Au,Cu and Co metallogenic belt in the south of East Kunlun. Gold deposits(spots) represented by Dazaohuo,Heicigou and Tongjinshan have been discovered,and tungsten deposits such as Erdaogou and Wanbaogou have been newly discovered. This article summarizes the geological background of Kunlunhe area and the characteristics of gold and tungsten deposits;gold and tungsten deposits metallogenic regularity and prospecting direction were analyzed from the aspects of sedimentary construction,structural deformation,magmatism,geochemical zoning,and spatial distribution. Research shows the final gold and tungsten metallogenesis in the Kunlunhe area is related to the late Indosinian and the next stage magmatism. The tungsten deposit is a medium-high temperature hydrothermal deposit formed by magmatic near-central facies,and the gold deposit is a medium and low temperature hydrothermal superposition deposits which remote facies. It is believed that the prospecting of tungsten deposits should be combined with geochemical anomalies and focus on the vicinity of the Late Triassic granite bodies. The gold deposits have great potential for prospecting in the vicinity of tungsten deposits and in northwest-west structural deformation zones.

关 键 词：金矿 钨矿 成矿规律 找矿方向 昆仑河地区 青海 

分 类 号：P612[天文地球—矿床学]