青海东昆仑东段拉浪麦钨矿勘查及其地质意义  

GEOLOGICAL SIGNIFICANCE OF LALANGMAI TUNGSTEN DEPOSIT IN EASTERN EAST KUNLUN OF QINGHAI PROVINCE

作　　者：白云 沈位元 田馨 唐耀 周游[6] 潘寅 张猛 BAI Yun;SHEN Wei-Yuan;TIAN Xin;TANG Yao;ZHOU You;PAN Yin;ZHANG Meng(Institute of Comprehensive Geological Survey in Sichuan Province,Chengdu 610081,China;Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province,Chengdu 610081,China;The Tenth Geological Brigade of Sichuan Province,Chengdu 621000,China;Sichuan Geophysical Survey Institute,Chengdu 610072,China;The Fifth Geological Brigade of Sichuan Province,Chengdu 610036,China;College of Earth Science,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]四川省综合地质调查研究所,四川成都610081 [2]稀有稀土战略资源评价与利用四川省重点实验室,四川成都610081 [3]四川省第十地质大队,四川绵阳621000 [4]四川省地球物理调查研究所,四川成都610072 [5]四川省第五地质大队,四川成都610036 [6]成都理工大学地球科学学院,四川成都610059

出　　处：《甘肃地质》2024年第1期42-52,共11页Gansu Geology

基　　金：中国地质调查局青藏专项地质调查工作项目(项目编号:12120114048101)。

摘　　要：拉浪麦钨矿位于青海省东昆仑成矿带东段,沟里整装勘查区,成矿地质背景和成矿地质条件优越。前人在研究区开展1:50 000水系沉积物测量圈定了HS乙367WSb异常,是寻找钨矿的有利成矿地区。为对HS乙367WSb异常开展查证工作,查明区内资源远景,圈定找矿靶区,采用了1:10 000土壤地球化学测量+1:10 000荧光地质填图+探槽+钻探工程验证的技术组合方法,实现了找矿突破,取得了较好找矿效果,新发现钨矿体21处。该矿床成因类型初定为矽卡岩型钨矿床,强烈发育的矽卡岩型钨矿化与广泛出露的英云闪长岩关系十分密切,结合东昆仑地区已有年代学资料和区域地质构造演化特征,分析认为拉浪麦英云闪长岩形成于原特提斯构造旋回的后碰撞阶段,证实了东昆仑地区加里东晚期也是一个非常重要的多金属成矿期,在今后的地质找矿勘查工作中应引起足够的重视。The Lalangmai tungsten deposit is located in the eastern section of East Kunlun,Qinghai Province,in the Gouli integrated exploration area.The mineralization geological background and conditions are superior.Previous researchers conducted a 1:50000 river sediment survey in the research area and delineated the HS67(W-Sb)abnormal area.It is a favorable mineralization area for searching for tungsten ores.This paper conducts verification work on the HS67(W-Sb)anomaly to identify the resource prospects in the area and delineate the prospecting target area.This article adopts a technical method that combines 1:10000 soil geochemical measurement,1:10000 fluorescence geological mapping,trenching and drlling engineering.A breakthrough in ore prospecting was achieved,and good ore prospecting results were achieved,with 21 newly discovered tungsten ore bodies.The genetic type of the deposit is initially determined to be a skarn-type tungsten deposit.The strongly developed skarn-type tungsten mineralization is closely related to the widely exposed tonalite diorite.Combined with the existing geochronology data in the East Kunlun area and regional geological structural evolution characteristics,it is believed that the tonalite diorite in the Lalangmai area was formed in the post-collision stage of the proto-Tethys tectonic cycle,and confirming that the late Caledonian period in the East Kunlun area was also a very important polymetallic mineralization period.Sufficient attention should be paid to this work in future geological prospecting and exploration work.

关 键 词：钨矿 地质特征 化探异常 找矿方向 东昆仑 拉浪麦 

分 类 号：P612[天文地球—矿床学] P595[天文地球—地质学]