陕西太白金矿含金角砾岩中铂族元素特征  

Features of platinum-group elements(PGE) in gold-bearing breccia of the Taibai gold deposit,Shaanxi

作　　者：邱士东[1] 徐九华[1] 谢玉玲[1] 朱和平[2] 林龙华[1] 

机构地区：[1]北京科技大学土木与环境工程,北京100083 [2]中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,北京100029

出　　处：《中国地质》2007年第1期117-122,共6页Geology in China

基　　金：高等学校博士点专项科研基金项目(20030008018)

摘　　要：采用硫镍火法试金(NiS-FA)结合电感耦合等离子质谱(ICP-MS)分析了太白金矿硫化物和含金角砾岩中铂族元素的含量,结果显示,与秦岭地区八卦庙相比铂族元素含量较高,而低于原始地幔,其中铂(Pt)、钯(Pd)、钌(Ru)富集,并结合前人研究资料对铂族元素的来源和迁移机制进行探讨。铂族元素可能受深源的影响,IPGE(Ir、Os、Ru)可能主要以硫化物形式存在而PPGE(Rh、Pt、Pd)可能主要以单质存在。The content the Taibai gold deposi of platinum-group elements （PGE） in samples of sulfides and gold-bearing breccia from t was determined by the nickel sulfide fire assay and inductively coupled plasma-mass spectrometry （ICP-MS）. The results show that the PGE content in these samples is higher than that in the Baguamiao gold deposit, Qinling, but lower than that in the primitive mantle. Among the PGE, Pt, Pd and Ru are richer. According to the above-mentioned analysis, combined with the previous study of the sources and transport mechanism of the PGE, the authors think that the PGE may have been subjected to the deep sources, of which the IPGE （Ir, Os and Ru） might occur in the form of sulfides, while PPGE （Rh, Pt and Pd） might occur as simple substance.

关 键 词：铂族元素 深源 迁移方式 

分 类 号：P618.5[天文地球—矿床学]