岩浆型Cu-Ni-PGE硫化物矿床研究的几个问题探讨  

Discussion on some problems concerning magmatic copper-nickel-PGE sulfide deposits

作　　者：柴凤梅[1,2] 张招崇[1] 毛景文[1,3] 董连慧[4] 张作衡[5] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室 [2]新疆大学资源与环境学院,新疆乌鲁木齐830046 [3]中国地质科学院矿产资源研究所北京100037 [4]新疆维吾尔自治区地质矿产勘查开发局 [5]中国地质科学院矿产资源研究所

出　　处：《矿床地质》2005年第3期325-335,共11页Mineral Deposits

基　　金：国家自然科学基金项目(40402012);国家305项目(2001BA609A_07_02);国家重点基础研究发展规划项目(G1999043211)的资助

摘　　要：文章简述了岩浆型Cu_Ni_PGE硫化物矿床的主要特点和研究现状,探讨了矿床的成矿机制,认为其成矿的首要条件是岩浆中硫达到饱和而使硅酸盐岩浆与硫化物熔体发生熔离。综述了如何利用同位素方法确定其成矿物质来源,介绍了如何判别硫饱和度的方法。Magmatic Cu-Ni-PGE sulfide deposits, the major supply sources of nickel and PGE in the world market, are considered to be spatially associated with mafic-ultramafic rocks. To meet the increasing demand for Cu, Ni and Pd, it is necessary to strengthen the research work on this type of ore deposits. In this paper, some important problems concerning magmatic copper-nickel sulfide deposits are discussed, with the emphasis placed on their metallogenic mechanism. It is generally believed that sulfide saturation and segregation from silicate magma as well as the corresponding favorable structural environment play a key role in their formation. In addition, the Re-Os isotopic system as a tracer of sulfide ore formation and the geochemical indexes for measuring the condition of sulfur in magma are also discussed.

关 键 词：地质学 岩浆作用 熔离作用 Cu—Ni—PGE矿床 铼-锇同位素 硫的饱和状态 综述 

分 类 号：P618.53[天文地球—矿床学]