青海省大通县卡里果玛钨钼矿床地质特征及成因探讨
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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。
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.
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.
引文
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[3] 陈生民.祁连山地区钨矿特征及找矿前景分析[J].黄金科学技术,2007,15(2):26-35.
[4] 丁成旺,何存发,张海青,等.青海省大通县大黑山地区钨矿矿床成因及找矿标志浅析[J].甘肃科技,2013,29(15):35-37.
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