福建省南靖县南坑钼矿床地质特征及找矿标志
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摘要
通过总结福建省南靖县南坑钼矿床的地质特征,认为该钼矿床为斑岩型钼矿床,钼矿体主要赋存于燕山早期花岗岩与文宾山组接触带,主要产在燕山早期花岗岩体内,受缓倾斜的石英脉和网脉状石英细脉控制,矿石类型为石英粗脉型和石英细脉型。该钼矿床具有弱磁异常,原生晕、次生晕异常发育,钼次生晕异常在深部见矿效果较好;与钼矿体关系密切的蚀变主要有云英岩化和硅化,找矿标志主要为燕山早期花岗岩、白楼—下楼断裂带、晚三叠世文宾山组、云英岩化、硅化及物化探异常,以上认识对区域寻找类似钼矿床具有参考价值。
Through summarizing the geological characteristics of the Nankeng molybdenum deposit in Nanjing County,Fujian Province,this study concludes that the deposit belongs to porphyry-type molybdenum ore deposit.Molybdenum orebodies occur mainly along the contact zone between early Yanshanian granite and surrounding rock Wenbingshan Formation,predominantly within early Yanshanian granite. The orebodies are controlled by gentlydipping quartz veins and stockwork quartz veinlets. There are two types of ores: quartz vein and quartz veinlets. The Mo-bearing deposit is characterized by weak magnetic anomalies,well development of primary halo and secondary halo,with the secondary halo anomaly showing good mineralization especially at depth. Alteration closely related to Mo mineralization contains greisenization and silicification and etc. The indicators for prospecting mainly are early Yanshannian granite,Bailou-Xialou fault zone,Wenbingshan Formation of late Triassic,greisenization and silicification,geophysical and geochemical anomaly,etc. The understanding above is of some references for finding similar molybdenum ore deposits in the area.
Through summarizing the geological characteristics of the Nankeng molybdenum deposit in Nanjing County,Fujian Province,this study concludes that the deposit belongs to porphyry-type molybdenum ore deposit.Molybdenum orebodies occur mainly along the contact zone between early Yanshanian granite and surrounding rock Wenbingshan Formation,predominantly within early Yanshanian granite. The orebodies are controlled by gentlydipping quartz veins and stockwork quartz veinlets. There are two types of ores: quartz vein and quartz veinlets. The Mo-bearing deposit is characterized by weak magnetic anomalies,well development of primary halo and secondary halo,with the secondary halo anomaly showing good mineralization especially at depth. Alteration closely related to Mo mineralization contains greisenization and silicification and etc. The indicators for prospecting mainly are early Yanshannian granite,Bailou-Xialou fault zone,Wenbingshan Formation of late Triassic,greisenization and silicification,geophysical and geochemical anomaly,etc. The understanding above is of some references for finding similar molybdenum ore deposits in the area.
引文
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[2]曹其琛,陈宏尧,赵胜利.福建南靖船场地区钼铅锌土壤地球化学异常[J].云南地质,2013,32(3):331-333.
[3]张志华,黄伦强,武国安,等.福建省南靖县船场钼铅锌银多金属矿物探找矿效果[J].低碳世界,2014(13):118-119.
[4]福建省地质矿产局.福建省区域地质志[M].北京:地质出版社,1985.
[5]福建省区域地质测量队. 1∶20万漳州、东山幅区域地质矿产调查报告[R].福州:福建省区域地质测量队,1974.
[6]陶春军,贾十军,陈富荣,等.安徽北淮阳沙坪沟钼矿区水系沉积物粒级试验研究[J].华东地质,2017,38(1):58-65.
[7]孙社良,陈士海,李永明,等.土壤地球化学测量在赣东北良坑钼钨矿区勘查中的应用[J].华东地质,2017,38(4):279-287.
[8]张集泉.福建德化丘埕矿区青岗钼矿床地质特征[J].福建地质,2013,32(2):105-111.
[9]张岩凯.福建三明眉山钼矿床地质特征及成因探讨[J].福建地质,2014,33(1):15-22.
[10]王芳华.福建建阳井后钼矿床地质特征及成因探讨[J].福建地质,2015,34(2):125-134.
[11]刘鹤,姚敬金,任宏,等.福建省铁帽山钼矿床地质、地球化学异常特征与找矿方向研究[J].地球学报,2014,35(6):683-692.
[12]周济元,肖惠良.成矿结构体系及其钨矿找矿意义[J].资源调查与环境,2006,27(2):110-119.
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