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广西五圩矿田研究进展

Research progress of Wuxu Ore Field,Guangxi

  • 摘要: 五圩矿田位于桂西北丹池成矿带南东端,其内分布着众多金属矿床。前人对五圩矿田进行了多年研究,取得了大量的成果。通过对矿床成因、成矿流体包裹体研究,同位素及稀土元素分析,成矿规律与成矿预测进行详细论述,总结了多年来前人对五圩矿田的研究成果。结合近期野外地质调查、闪锌矿微量元素及稀土元素分析,认为五圩矿田在印支期—燕山期发生强烈的褶皱、断裂和岩浆侵入活动,成矿方式以充填为主;成矿流体具有中低温度、富CO2及低盐度等特点;成矿流体主要来源于岩浆热液,同时有少量围岩物质加入。五圩矿田深部具有良好的找矿前景,找矿工作应着手于箭猪坡矿床中心及深部。

     

    Abstract: Wuxu Ore Field is located in the southeast end of Danchi metallogenic belt in northwest Guangxi,where there are many polymetallic deposits distributed.Wuxu ore field has been studied for many years by predecessors and a lot of achievements have been made.In this paper,the genesis of the deposit,the study of ore-forming fluid inclusions,isotope and rare earth elements analysis,and the metallogenic regularity and prediction are discussed in detail,and the achievements of predecessors on the Wuxu Ore Field in recent years are summarized.Based on the recent outdoor geological survey,the analysis of trace elements in sphalerite and rare earth elements,the study believes that strong folding,faulting and magmatic intrusion took place in Wuxu Ore Field during Indosinian-Yanshanian,and the metallogenic pattern was mainly filling.The ore-forming fluid is characterized by medium-low temperature,rich CO2 and low salinity.The ore-forming fluid mainly derived from magmatic hydrothermal fluid,with addition of a small amount of surrounding rock material.There are good prospecting prospects in the deep part of Wuxu Ore Field,and the prospecting work should start from the center and deep part of Jianzhupo Deposit.

     

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