南山钨锡多金属矿床地球化学特征及地质意义  

The Geochemistry and Geological Significance of Nanshan W-Sn-Polymetallic Deposit

作　　者：范飞鹏[1] 肖惠良[1] 陈乐柱[1] 鲍晓明[1] 蔡逸涛[1] 周延[1] 武玲[1] 吴涵宇[1] 

机构地区：[1]南京地质矿产研究所

出　　处：《金属矿山》2013年第9期121-125,共5页Metal Mine

基　　金：中国地质大调查项目(编号:1212010881305);广东始兴南山坑-良源地区钨锡多金属矿评价项目(编号:1212011120811);江西竹山-广东澄江地区钨锡多金属矿远景调查项目(编号:1212011120813)

摘　　要：对南山矿区内各类含矿矽卡岩的地球化学组成进行分析,结果表明:含有Ti、Fe、Mn、Mg和Ca等元素的流体在黑云母花岗岩和矽卡岩中进行了交换迁移,形成了矽卡岩矿物。矽卡岩和大理岩稀土配分模式相似,呈右倾型,富集轻稀土,Eu中等负异常,Ce异常不明显;富集微量元素Rb、Th、Sm,贫K、Ba、P、Ti,但大理岩中亏损Rb、Ba等。说明矽卡岩成因属热液交代型,形成温度为中高温,并继承了围岩特征,矽卡岩和大理岩成岩成矿时间为158.1±1.8 Ma。The analysis on the geochemical composition of various types of ore-bearing skarn showed that the fluid containing Ti, Fe, Mn, Mg and Ca are transferring and exchanging among biotite granites and skarn rocks in Nanshan mining area, forming skarn minerals. The ore-bearing skarn and marble have similar REE patterns in right-inclined type, and enrich in LREE with Eu in middle negative anomaly and no Ce anomaly. The skarn enriches trace elements of Rb, Th and Sm and is depleted of K, Ba, P and Ti, and the marble is lack for Rb and Ba. Obviously,it＇s typical hydrothermal-metasomatic skarn formed in high temperature, inheriting lithologic features. The formation time of ore-bearing skarn and marbles was 158. 1±1.8 Ma.

关 键 词：地球化学 钨锡多金属矿 接触交代 矽卡岩 南山矿区 南岭 

分 类 号：P618.51[天文地球—矿床学]