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潘卡利Ni-Cu矿化产于比特利斯地块由黑云母片麻岩、石英长石片麻岩、角闪岩和变花岗岩组成的变质地层中。这些岩石可能形成于前寒武纪并受到区域性角闪岩相变质作用和晚期碎裂作用的影响。也有遭受早期榴辉岩相变质作用的迹象。Ni-Cu矿化呈块状硫化物透镜状矿体产出,这些矿体平行于不同层位的穿插叶理,呈线状排列分布。这些矿体长达3m,宽为2m。紧邻矿体的围岩一般为石英-长石片麻岩或较少为石英-长石片麻岩和角闪岩。矿石中含有由磁黄铁矿、镍黄铁矿和黄铜矿组成的共生矿物组合及As、Co的含量低表明,矿化为正岩浆成因。潘卡利矿床中尖晶石矿物的结构和化学性质以及矿石的Cu/(Cu+Ni)比值=0.29表明,该矿床与基性岩浆有成因联系。区内唯一的镁铁岩是角闪岩,以具拉斑玄武岩的化学成分为特征。但是,在任一角闪岩岩体中却无浸染状和网脉状矿石存在。提出了一个根据岩浆房中硫化物熔体与玄武岩岩浆相互分离而建立的模式。该熔体和玄武岩岩浆后来分别侵入到围岩中是造成角闪岩中缺乏浸染状和网脉状矿石的原因,并可用以解释矿体与角闪岩的地质背景相似性及所观测的二者的野外地质关系。这些矿石的构造和结构特点表明,它们遭受了区域性变质作用和对围岩也有影响的碎裂变形作用。笔者认为,这些矿体可能是在前寒武纪
The Phangkali Ni-Cu mineralization occurs in metamorphic formations consisting of biotite gneiss, quartz feldspar gneiss, amphibolite and metamorphic granite in the Bitlisle block. These rocks may have formed during the Precambrian and were affected by regional amphibolite facies metamorphism and late-stage disintegration. There are also signs of metamorphism in the early eclogite. Ni-Cu mineralization is massive sulfide lens-like ore body output, the ore body parallel to the different layers of interplanting leaf, arranged in a linear arrangement. These ore bodies are up to 3m in width and 2m wide. Surrounding rocks next to the ore body are generally quartz-feldspar gneiss or less quartz-feldspar gneiss and amphibolite. The ore contains a combination of paragenetic minerals consisting of pyrrhotite, pentlandite and chalcopyrite, and the low content of As and Co indicates that the mineralization is of positive magmatic origin. The structural and chemical properties of spinel minerals in the Pankari deposit and the Cu / (Cu + Ni) ratio of ore = 0.29 indicate that the deposit is genetically linked to mafic magmas. The only mafic in the area is amphibolite, characterized by the chemical composition of tholeiitic basalt. However, there are no disseminated and reticular ores in either amphibolite. A model based on the separation of sulphide melt from basaltic magma in the magma chamber was proposed. The later intrusion of the melt and basaltic magma into the surrounding rock is the reason for the absence of disseminated and reticular ores in the amphibolite and can be used to explain the geological background similarities between ore bodies and amphibolite and the observed Wild geology of the relationship. The structural and structural features of these ores show that they suffer from regional metamorphism and fragmentation that also affects the surrounding rock. In my opinion, these ore bodies may be Precambrian