摘要
我国铜镍硫化物矿床成矿岩体的稀土元素地球化学特征与其产出的构造环境及含矿性密切相关。地槽区岩体的稀土元素含量及多种参数相对较低，主要与其起源于俯冲洋壳较大比例重熔有关。同一环境中富矿岩体较贫矿岩体的稀土元素含量及多种参数比值相对较高，则与其所经历的深部岩浆分异程度较高有密切关系。因而依据岩体稀土元素地球化学特征，可推断其铜镍含矿性。
The REE geochemistry of Cu-Ni intrusives is closely related to their tectonic environments and oreforming potentiality. The REE contents of rockbodies in geosynclines are relatively low because of their origination from the high proportion remelting of subducted ocean crust. In a given tectonic environment, the REE contents of highly mineralized rockbodies are higher than those of pooly mineralized rockbodies, which bears a close relation to higher degree of diffractionation of the deep magma. Therefore, the REE features of the rockbodies may be used to judge the orebearing property.
出处
《矿产与地质》
1998年第4期225-229,共5页
Mineral Resources and Geology
基金
中国有色金属工业总公司科研项目
