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青海省大通县卡里果玛钨钼矿床地质特征及成因探讨

  • 陈晓琳|张志尉|李华|白洪溪|吉明甲|刘博
  • 作者单位:
  • 青海省地质调查局&吉林大学地球科学学院|青海崯田地球物理化学勘查股份合作公司|青海省地质调查局|青海省地质调查局|青海省地质调查局
  • 基金项目:

  • 青海省地质勘查基金项目(2009180002kc001)
  • 详细信息:

  • 作者简介:
  • 陈晓琳(1988—),女,青海西宁人,工程师,硕士研究生,主要从事地质找矿勘查及资源管理工作;西宁市城西区胜利路22号地矿花园C座1101室,青海省地质调查局,810000;E-mail:cxl569558@163.com
  • 通讯作者:
  • isnull
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Discussion of geological characteristics and genesis of the Kaliguoma Tungsten-Molybdenum Deposit,Datong County,Qinghai Province

  • English Author:
  • Qinghai Geological Survey&College of Earth Sciences,Jilin University|Qinghai Yintian Geophysical and Geochemical Exploration Joint Stock Company|Qinghai Geological Survey|Qinghai Geological Survey|Qinghai Geological Survey
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

卡里果玛钨钼矿床位于秦祁昆造山系中—南祁连弧盆系北侧。研究区内共圈出钨矿体12条,钨钼矿体2条,钼矿体4条,共计18条矿体,矿石类型主要有热液型白钨矿矿石、辉钼矿矿石及少量的萤石脉型、石英脉型白钨矿矿石,围岩蚀变比较发育,其中硅化、矽卡岩化、萤石化与成矿关系较为密切。研究表明,矿体受北西向断裂及与其平行的次级断裂控制,白钨矿矿体的形成受古元古界托赖岩群片麻岩岩组、加里东期二云母二长花岗岩体及断裂构造多种因素的控制。初步分析认为,卡里果玛钨钼矿床成因类型为高温热液型。

关键词:

地质特征;矿床成因;钨矿体;钼矿体;卡里果玛钨钼矿床

Abstract:

The Kaliguoma Tungsten-Molybdenum Deposit is located at the northern side of middle-south Qilian arc-basin system subordinate to Qin-Qi-Kun orogenic system.There are 12 tungsten ore bodies,2 tungsten-molybdenum ore bodies and 4 molybdenum ore bodies delineated in the study area,18 ore bodies in total.The ore types mainly include hydrothermal scheelite ores,molybdenite ores and a small amount of fluorite vein type and quartz vein type scheelite ores,the surrounding rock alteration relatively develops,and silicification,skarnization,fluoritization are relatively closely related with mineralization.The study shows that the ore body is controlled by the NWtrending fault and its parallel secondary fault.The formation of the scheelite ore body is controlled by the Paleoproterozoic Tuolai Rock Group Gneiss Formation,the Caledonian two-mica monzonitic granite body and the fault structure.According to preliminary analysis,the genetic type of the Kaliguoma Tungsten-Molybdenum Deposit is a high-temperature hydrothermal type.

Keywords:

geological characteristics;deposit genesis;tungsten ore body;molybdenum ore body;Kaliguoma Tungsten-Molybdenum Deposit