广西西大明山弄屯铅锌矿床地质特征及成因分析  

THE GEOLOGICAL FEATURE AND GENESIS ANALYSIS OF LONGTUN PB-ZN DEPOSIT IN XIDAMINGSHAN,GUANGXI

作　　者：滕建青 TENGJian-qing(College o f Geosciences,Guilin University of Science and Technology,Guilin 541006)

机构地区：[1]桂林理工大学地球科学学院,广西桂林541006

出　　处：《云南地质》2018年第3期332-337,共6页Yunnan Geology

摘　　要：弄屯铅锌矿床是广西西大明山成矿带新发现的大型铅锌矿床,其矿体主要呈脉状填充于北东向和东西向断裂破碎带中,矿体产状严格受断裂控制。根据成矿成矿流体活动痕迹和已有的同位素数据资料,该铅锌矿床成矿物质来源于矿区寒武系和岩浆,属于与侵入岩体有亲缘关系的热液脉型铅锌矿床。根据岩体的成岩时代(U-Pb∶99. 84Ma),推测矿床的成矿时代为燕山晚期。Longtun Pb-Zn deposit is a new deposit discovered recently in Xidamingshan, Guangxi. The orebody is mainly veined, filling in NE, EW fault zone. The orebody is controlled strictly by the fault. Accord-ing to the activity trace of metallogenesis fluid and the isotope data, the metallogenesis deposit are Cambrian and magma of the orefield, belonging to hydrothermal deposit in affinity to the intrusion. Basing upon the rock forming age of rock body （ U-Pb isotope dating age 99. 84Ma）, we suppose that tlie metal-logenesis age of orebody is Late Yanshanian.

关 键 词：断裂控矿 热液脉型铅锌矿床 广西西大明山弄屯 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]