2023年8月下世界有色金属205津巴布韦穆托科KUTANGA矿区锂矿矿床特征及经济预可行分析蔡忆，王波，戴倩萍（江西省地质局生态地质大队，江西南昌330002）摘要：目前津巴布韦已发现伟晶岩脉群12个，本矿区处于12个伟晶岩群之一，矿区内花岗伟晶岩型锂矿脉大致呈近东西向展布，倾向北北东，倾角65°~75°左右。主要产于花岗岩裂隙及构造破碎带中，通过追索法、目前在矿区中部发现一条锂矿脉出露长度约600m~650m，宽度8m~12m，平均宽度约10m，矿区内共采集样品测试结果显示氧化锂在0.92%~3.20%之间，品质较好。矿体整体呈脉状产出，脉体连续性好，通过前期当地村民施工的采坑及已施工的槽探工作发现其分带性明显，可见外带为锂云母；内带为透锂长石，主要蚀变为钠长石化、硅化和白云母化，蚀变越强，锂含量越高。矿石总体呈现白色，局部见紫色，矿石矿物为透锂长石、锂云母；脉石矿物为石英、长石等。本文主要介绍该区内锂矿的矿床特征，对找矿远景及开发前景作出评价。关键词：伟晶岩；锂矿；矿床特征；穆托科；经济预可行分析中图分类号：P618.71文献标识码：A文章编号：1002-5065（2023）16-0205-3AnalysisofthecharacteristicsandeconomicfeasibilityoflithiumdepositsinaminingareainMutoko,ZimbabweCAIYi,WANGBo,DAIQian-ping(EcologicalGeologyBrigadeofjiangxiGeologicalBureau,Nanchang330002,China)Abstract:Atpresent,12pegmatiteveinshavebeenfoundinZimbabwe,andtheminingareaisoneofthe12pegmatitegroups.Pegmatitelithiumveinisroughlyspreadclosetoeast-west,tendingtonorthandeast,withainclinationAngleofabout65~75.Itismainlyproducedingranitefissureandstructuralfracturezone.Throughtherecoverymethod,alithiumveinisfoundinthemiddleoftheminingareawithalengthofabout600meters~650meters,widthof8meters~12metersandaveragewidthofabout10meters.Thetestresultsofsamplescollectedintheminingareashowthatlithiumoxideisbetween0.92%~3.20%,withgoodquality.Thewholeorebodyisproducedinthepulse,andthepulsecontinuityisgood.Throughthepitconstructedbythelocalvillagersandthegrooveexploration,theouterbandisobvious,andtheinnerbandislithiumfeldspar,whichismainlyalteredintosodiumfeldspification,silicizationanddolith,thestrongertheerosion,thehigherthelithiumcontent.Theoreisgenerallywhiteandlocallypurple...
