东昆仑东段拉浪麦钨矿床地质-地球化学勘查模型  

Geological and geochemical exploration model of Lalangmai tungsten deposit in the eastern section of east Kunlun

作　　者：白云 廖芝华 熊昌利 马志磊 徐云峰 周游[3] 唐耀 沈位元 BAI yun;LIAO Zhihua;XIONG Changli;MA Zhilei;XU Yunfeng;ZHOU You;TANG Yao;SHEN Weiyuan(Sichuan Institute of Comprehensive Geological Survey,Chengdu 610081,China;Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province,Chengdu 610081,China;College of Earth Science,Chengdu University of Technology,Chengdu 610059,China;The 5th Geological Brigade of Sichuan,Chengdu 610036,China;The 10th Geological Brigade of Sichuan,Mianyang Sichuan 621000,China)

机构地区：[1]四川省综合地质调查研究所,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,成都610081 [3]成都理工大学地球科学学院,成都610059 [4]四川省第五地质大队,成都610036 [5]四川省第十地质大队,四川绵阳621000

出　　处：《有色金属（矿山部分）》2024年第4期102-112,共11页NONFERROUS METALS(Mining Section)

基　　金：“十四五”国家重点研发计划项目(2022YFC2905001);中国地质调查局青藏专项(12120114048101);四川省科技厅基金项目(2023NSFSC0267);四川省地质调查研究院财政支持科研项目(SCIGS-CZDXM-2024003)联合资助

摘　　要：东昆仑造山带是一条巨型岩浆岩构造活动带,是我国中央造山带的重要组成部分,成矿条件优越,成矿作用显著,一直备受地质学者们重视。拉浪麦钨矿床位于东昆仑造山带东段察汗乌苏河地区,隶属青海省都兰县热水乡管辖,是近年新发现的一处矽卡岩型矿床。目的:基于拉浪麦钨矿床为研究对象,建立地质-地球化学综合勘查模型,指导拉浪麦地区钨矿地质找矿工作部署。方法:选择在综合阐述分析成矿地质背景、矿区地质特征和土壤地球化学异常特征基础上,进一步总结地质-地球化学找矿标志,由此,系统构建地质-地球化学综合勘查模型。结果:W-Sn-Mo-Au-Ag-As-Sb元素具有较强的相关性,而其他元素相关性差;已发现的钨矿(化)体主要赋存于矽卡岩类岩石中,英云闪长岩与白沙河组地层接触带是找钨矿最为有利的部位;北东-南西走向的构造破碎带为容矿构造;钨矿体中的金属矿物以白钨矿为主,黑钨矿为辅。结论:依据构建的地质-地球化学综合勘查模型为指导,在拉浪麦地区圈出找矿靶区3处,其中,Ⅰ类找矿靶区1处,Ⅱ级找矿靶区2处,深部和外围地段找矿潜力大。研究创新点:系统构建的地质-地球化学综合勘查模型,有效指导拉浪麦钨矿区取得了较好的找矿效果,实现了东昆仑东段钨矿的找矿突破,为东昆仑造山带内寻找同类型钨矿提供了新的找矿方向和新的勘查思路。The East Kunlun Orogen is a giant magmatic tectonic activity belt and an important part of the Central Orogenic Belt of China.It has superior mineralization conditions and remarkable mineralization phenomena,and has always attracted the attention of some geologists.The Lalangmai Tungsten Mine is located in the Chahanwusu River area in the eastern section of the East Kunlun Orogen and is under the jurisdiction of Huishui township,Dulan county,Qinghai province.It is a newly discovered skarn-type deposit in recent years.This article takes the Lalangmai tungsten deposit as the research target.Purpose:The purpose of the research is to establish a geological-geochemical exploration model to guide the deployment of prospecting for the tungsten deposit in the Lalangmai area.Method:The research method was selected based on the comprehensive analysis of the mineralization geological background,the geological characteristics of the mining areas,and the characteristics of the surface soil geochemical anomalies,and further summarized the geological-geochemical prospecting mark,thereby constructing a geological-geochemical exploration model.Result:The main conclusions obtained from the research include:W-Sn-Mo-Au-Ag-As-Sb elements have a strong correlation,while other elements have a poor correlation.The currently discovered tungsten ore bodies(mineralized bodies)mainly occur in skarn rocks.The contact zone between tonalite diorite and Baishahe formation strata is the most favorable location for finding tungsten ore.The northeast-southwest trending structural fracture zone is an ore-containing structure.The metal minerals in the tungsten ore bodies are mainly scheelite,followed by wolframite.Conclusion:Based on the geological-geochemical exploration model constructed in the article,3 prospecting target areas were delineated in the Lalangmai area,including 1 Class-Ⅰprospecting target area and 2 Class-Ⅱprospecting target areas.In addition,it is expected that the deep areas and the peripheral areas of the mining area have gre

关 键 词：东昆仑造山带 拉浪麦 钨矿床 地质-地球化学 勘查模型 找矿标志 

分 类 号：TD15[矿业工程—矿山地质测量]