对中国小岩体型铜镍硫化物（铂族）矿床成矿地质体的岩体规模、岩石组合及岩石地球化学特征进行了综述，并与其他类型铜镍硫化物矿床特征进行了对比，最后总结出了铜镍硫化物矿床成矿地质体的判别标志特征。结果表明：铜镍硫化物（铂族）矿床成矿地质体的出露形态不规则，多以岩脉、岩墙或岩床形式出露，出露面积较小，多小于1 km2；岩石组合多以二辉橄榄岩、橄榄岩、橄榄辉石岩、辉石岩、苏长岩、辉长岩、闪长岩为主，岩相分带明显，岩体基性程度由内向外、从下向上逐渐降低，形成“外酸内基”、“上酸下基”的特征；岩石主要为铁质拉斑玄武岩系列；配分模式和蛛网图显示，橄榄石中Ni含量较低，大离子亲石元素和轻稀土元素富集，高场强元素和重稀土元素亏损，过渡族元素呈现Cr、Ni相对亏损的“W”型模式，铂族元素配分模式呈现 Pt、Pd含量较高的左倾，源区为幔源但具有壳源的混染。%Metallogenic geological bodies of the small-intrusion-hosted Ni-Cu (-PGE) sulfide deposits in China were reviewed, including the scale of intrusion, rock assemblage and geochemistry;the deposits were compared with other types of Ni-Cu sulfide deposits;and the identification marks of metallogenic geological bodies of Ni-Cu sulfide deposits were summarized. The results show that metallogenic geological bodies of Ni-Cu (-PGE)sulfide deposits occur as irregular shape like veins, dikes or sills, outcrop areas are mostly less than 1 km2;rock assemblage is mostly composed of iherzolite,peridotite,olivine pyroxenite,pyroxenite,norite, gabbro and diorite, and belongs to the iron-rich tholeiitic basaltic series;the petrographic zonation is evident,and the basic degree gradually decreases from the inside to the outside or from the below to the above of the intrusion,as like for“the outside is acidic and inside is basic”and “the above is acidic and the below is basic”;according to the patterns and spider diagrams, the content of Ni for olivine is low,LILE and LREE are enriched, HFSE and HREE are depleted,and the pattern of transition element is “W”type with the relative loss of Cr and Ni, and the pattern of PGE is left with rich Pt and Pd,so that the sources are mantle-derived but with crustal contamination.
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