云南麻栗坡县茅草坪锡矿区成矿条件分析  

ANALYSIS OF METALLOGENIC CONDITIONS OF THE MAOCAOPING TIN MINING AREA,MALIPO COUNTY,YUNNAN PROVINCE

作　　者：杨卓 孙福周 苏文鹏 YANG Zhuo;SUNFu-zhou;Su Wen-Peng(Team 317,Yunnan Bureau of Nonferrous Geology,Qujing 655000)

机构地区：[1]云南省有色地质局三一七队,云南曲靖655000

出　　处：《云南地质》2024年第S01期290-295,共6页Yunnan Geology

摘　　要：茅草坪锡矿区处于滇东南锡多金属成矿区新寨至新厂冲锡矿带,区内以南温河变质核杂岩大型拆离滑脱带为主体,分为内核、剥离断层系、盖层。锡矿体主要赋存于剥离断层系之间上元古界新寨岩组。赋矿岩石主要为复杂矽卡岩,片岩具微弱锡矿化。成矿作用以矿源层建造为基础,变质作用形成赋矿岩石,岩浆热液矿化叠加改造形成矿床,成矿活动受矿源层建造、变质相带、矽卡岩地质体及含矿花岗岩等综合地质因素控制。TheMaocaoping tin mining area is located in the Xinzhai to Xinchangchong tin mineralization belt of the southeastern Yunnan tin polymetallic mineralization area.The area is mainly composed of the large-scale detachment zone of the Nanwenhe metamorphic core complex,which is divided into the core,detachment fault system,and cover layers.The tin ore bodies are mainly hosted in the Upper Proterozoic Xinzhaiyan Formation between detachment fault systems.The ore bearing rocks are mainly complex skarn,and the schist has weak tin mineralization.Based on the formation of the ore source layer,the ore bearing rocks was formed through metamorphic processes,while the deposits were formed through the superimposed reformation of magmatic hydrothermal fluids.The mineralization activity is controlled by comprehensive geological factors such as the construction of ore source layers,metamorphic facies zones,skarn geological bodies,and ore bearing granites.

关 键 词：变质核杂岩 剥离断层 矽卡岩型矿床 成矿条件 茅草坪锡矿 云南麻栗坡 

分 类 号：P618.44[天文地球—矿床学]