青海省格尔木二道沟白钨矿床地质特征初析  

Geological Features of the Erdaogou Scheelite Deposit in the Ge Ermu of Qinghai Province

作　　者：王泰山[1,2] 鲁海峰[1,2] 张尧[1,2] 逯永卓 马俊林[1,2] 徐贝贝[1,2] 

机构地区：[1]青海省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：《中国钨业》2016年第4期14-20,共7页China Tungsten Industry

基　　金：中国地质调查局地质调查项目(12120113030200)

摘　　要：青海省格尔木二道沟白钨矿床是近年发现的新矿床,文章从地层、构造及岩浆岩等方面介绍了矿区的成矿地质背景,通过对矿区已经发现的白钨矿体从赋矿层位、含矿岩性、矿体特征及围岩蚀变等方面进行了归纳总结,初步认为矿区内发现的白钨矿与地层及构造关系密切,其中石英脉是矿区内白钨矿的主要载体,白钨矿在垂向上存在一定的分带特征,元素也从地表W元素向深部W、Cu、Bi元素组合变化,同时分析了区内成矿地层、构造、岩浆岩及成矿条件,提出了二道沟白钨矿床为中高温石英脉型白钨矿床。The Erdaogou scheelite deposit is a newly discovered deposit in Geermu, Qinghai province. This paper gives a comprehensive introduction of the strata, structure and magmatic rocks of the Erdaogou deposit and also concludes the features of ore-bearing rocks, ore bodies and alteration of walled-rocks. The scheelite ore bodies display close relation with the strata and structures, and quartz veins are the main hosts to scheelite. Compositional variation is found across the vertical profile in the deposit. The superficial part is rich in W, whereas the deep level is featured by the combination of W, Cu, and Bi. Considering the ore forming and tectono-magmatic background in the area, we propose that the Erdaogou scheelite deposit belongs to the medium-high temperature quartz-vein type.

关 键 词：白钨矿床 地质特征 成因 二道沟 格尔木 

分 类 号：P618.67[天文地球—矿床学]