江西会昌曲水坑锡矿床地质特征及找矿前景分析  

Geological characteristics of the Qushuikeng Sn ore deposit in Huichang,Jiangxi Province and analysis for the prospect potential

作　　者：孙社良[1] 朱昌杰[1] 李永明[1] 李吉明[1] 聂龙敏[1] 杨细浩 

机构地区：[1]江西省地质调查研究院,南昌330030

出　　处：《华东地质》2016年第4期291-299,共9页East China Geology

基　　金：江西省地质勘查基金项目"江西省宝山-夫山铜多金属矿调查评价(项目编号:20090208-2)"资助

摘　　要：曲水坑锡矿床位于锡坑迳锡矿田东部,大地构造位置处于南岭东西向构造带东段与武夷山北北东向隆起带南段西坡复合部位,成矿地质条件优越。通过分析区域地质、矿区地质及矿床地质特征,认为曲水坑锡矿床属于岩浆期后高—中温热液交代充填型矿床,似斑状(黑云母)花岗岩形成之后,岩浆分异的含矿热液沿断层破碎带、裂隙等导矿构造运移并在有利部位富集成矿。系统总结了岩浆岩、构造、赋矿地层、赋矿围岩、围岩蚀变、地球化学、铁帽等找矿标志,并对矿体沿走向和倾向方向的延伸、厚度、品位变化特征及共(伴)生资源进行了分析,为该地区寻找同类型矿床提供参考。The Qushuikeng Sn ore deposit in the east of the Xikengjing tin ore field is tectonically located in the intersection between the eastern section of the Nanling E W-trending tectonic belt and the southern section of the Wuyishan NNE-trending tectonic belt. All this indicates its favorable geological condition. Based on the regional and ore deposit geology, this study classified the Qushuikeng Sn ore deposit into post-magmatic high and medium-temperature hydrothermal fissure filling-metasomatic type deposit. The formation of porphyritic biotite granite was followed by that ore-bearing hydrothermal fluids differen- tiating from magma migrated along the faults and fractures into favorable sections to form ore deposits. This study summarized prospecting criteria, such as magmatic rocks, structure, ore-bearing strata and country rocks, alteration, geochemistry, and gossan, and analyzed extension, thickness, grade variation and associated mineral resources, providing some references for seeking the deposits of the same type in this area.

关 键 词：矿床特征 矿床成因 找矿标志 找矿前景 曲水坑 

分 类 号：P618.44[天文地球—矿床学]