【摘要】 采用镍锍试金预处理中子活化分析方法，测定了冷水箐铜镍硫化物矿床的矿石和含矿围岩的铂族元素含量，探讨了岩浆演化和熔离作用过程中铂族元素的地球化学行为和贵金属配分型式。结果表明，冷水箐矿床的铂族元素配分型式与玄武岩浆有关的铜镍硫化物矿床相似，而明显不同于与科马提岩浆有关的铜镍硫化物矿床。认为冷水箐岩体镁铁－超镁铁岩的原始岩浆为玄武岩浆。更多还原

【Abstract】 The contents of platinum group elements in Cu-Ni sulfide ores and congenial host rocks from theLengshuiqing Cu-Ni deposit have determined using neutron activation analysis after a nickel sulphidefire assay preconcentration. This paper discusses the geochemical behavior of platinum group elementsduring mgratic evoution and liquation of sulfide and the noble metal distribution patterns in rocksand ores. It turns out that the distribution patterns of platinum group elements in the Lengshuiqingdeposit are similar to those in Cu-Ni deposit genetically related to basaltic meqma, but different fromthose in komatiite-hosted Cu-Ni deposits. The authors proposed that the primary rnagna forming maf-ic-ultramafic rocks in the Lengshuiqing intrusion is a basaltic mngma.更多还原