含矿基性-超基性岩的镁铁比值  

The Mg/Fe ratio of ore-bearing basic-ultrabasic rocks

作　　者：代俊峰[1,2] 宫磊[1,2] 霍永豪 

机构地区：[1]兰州大学地质科学与矿产资源学院,兰州73000 [2]甘肃省西部矿产资源重点实验室,兰州73000

出　　处：《地质找矿论丛》2016年第1期42-46,共5页Contributions to Geology and Mineral Resources Research

摘　　要：基性-超基性岩中赋存有铜镍硫化物矿床、豆荚状铬铁矿床等许多重要的矿床,基性-超基性岩成岩成矿方面的研究多采用镁铁比值,但以往利用该比值时未考虑岩石的SiO_2含量、地质构造及岩石蚀变等一些重要条件。文章结合国内外一些重要的铜镍矿床和铬铁矿矿床,考虑到上述的几个条件,讨论了镁铁比值在划分岩石类型方面的应用,通过计算给出了与前人不同的镁铁比值划分区间。There are many important ore deposits hosted in the basic-ultrabasic rocks,such as Cu-Ni sulphide deposits and podiform chromite deposits.Researches on petrogenisis and metallogenisis of basic-ultrabasic rocks applied generally the Mg/Fe ratio and ignored some crucial conditions such as SiO_2 content,geological structure and rock alteration.In consideration of some important Cu-Ni deposits and chromite deposits at home and abroad and above conditions,this paper discussed the application of M/F in the rock classification and proposed new division fields based on calculation.

关 键 词：基性-超基性岩 铜镍矿床 铬矿床 镁铁比值 SIO2含量 地质构造 岩石蚀变 

分 类 号：P584[天文地球—岩石学] P588.12[天文地球—地质学]