老挝Boneng砂锡矿地质特征及矿床成因分析  

Geological Characteristics and Genetic Analysis of Boneng Tin deposit in Laos

作　　者：刘建 徐如磊 包久荣 赵振华[1] 李鹏翔 LIU Jian;XU Ru-lei;BAO Jiu-rong;ZHAO Zhen-hua;LI Peng-xiang(Tianjin north china geological exploration general institute,Hedong,300170,Tian Jin,China)

机构地区：[1]天津华北地质勘查总院,天津300170

出　　处：《世界有色金属》2024年第2期64-66,共3页World Nonferrous Metals

摘　　要：Boneng砂锡矿区Ⅰ、Ⅲ区属残坡积型,Ⅱ、Ⅳ区属冲洪积型。前者分布于山麓及其缓坡地带,矿层较厚,品位变化大;后者分布于现代河床及两侧,规模不大,厚度l-10米,品位变化较大。一般情况下,在残坡积层中铁锰结核以及褐铁矿含量越高,锡的品位越高。The Boneng sand tin mining area belongs to the residual slope type in areas I and III,while areas II and IV belong to the alluvial-proluvial type.The former is distributed in the foothills and gentle slopes,with thick ore layers and significant changes in grade;The latter is distributed in modern river beds and on both sides,with a small scale,a thickness of 1-10 meters,and significant changes in grade.In general,the higher the content of iron manganese nodules and limonite in the residual slope layer,the higher the grade of tin.

关 键 词：锡矿 残坡积型 冲洪积型 南巴坦盆地 

分 类 号：P618.44[天文地球—矿床学]