【作者】 马开义； 刘光海；

【Author】 Ma Kaiyi and Liu Guanghai (Institute of Mineral Deposits,Chinese Academy of Geological Sciences)

【机构】 矿床地质研究所；

【摘要】 岩浆型硫化铜镍矿床,是当代世界上最主要的镍矿床类型,也是重要的铜矿、铂族金属矿床类型。这种矿床的最突出的特点,即所有矿体的产出都与超基性岩体或基性岩体有关。总结岩浆型硫化铜镍矿的成矿模型和找矿模式,首先必须确定基性超基性岩体的类别和侵位。这里,以新疆喀拉通克铜镍矿床的实际资料为基础,总结该类岩浆型硫化铜镍矿的成矿与找矿模式,其重点包括基性超基性岩的岩相特征与侵位,岩体和铜镍矿体的地球化学,地球物理性质与特点,某些典型矿床的模型和找矿方法。更多还原

【Abstract】 Magmatic type copper and nickel sulfide deposits,an important source for copper and nickel materials,are closely related,to basic and ultrabasic masses.Genetically,these deposits might be assigned to three types,namely magmatic liquation type(Ⅰ),anatectic injection type(Ⅱ) and hydrothermal metasomatic type(Ⅲ),of which the first two types are most important,and the second type constitutes the major high-grade ores. The metallogenic model for copper and nickel sulfide deposits is discussed in this paper,and an ore-prospecting model of"four high values and one low value"is established,that is to say,anomalies characterized by high magnetic force,high gravity,high induced polarization,high content of such metallogenic elements as Cu,Ni,Co and Cr and low resistivity are worth noticing. To illustrate this,the authors give some examples in this paper.更多还原