新疆萨尔托海铬铁矿中“绿泥石壳”的研究  

The Research about "Chlorites shell" of Sartohay Chromities Deposits,Xinjiang

作　　者：杨念[1] 邓松良 况守英 岳蕴辉[1] 孟庆鹏[1] 

机构地区：[1]新疆维吾尔自治区矿产实验研究所,新疆乌鲁木齐830000

出　　处：《新疆地质》2016年第3期375-381,共7页Xinjiang Geology

基　　金：国土资源部公益性行业科研专项经费项目(201211043)资助

摘　　要：萨尔托海铬铁矿的成因一直存在争议,通过研究其特有的"绿泥石壳"可知其矿床成因。采用光、薄片的镜下鉴定、X-射线粉晶衍射和电子探针分析,可知矿区围岩主要为蛇纹石,而"绿泥石壳"和矿石中的脉石矿物空间上互相过渡,二者矿物成分完全相同,为淡斜绿泥石。围岩蛇纹石中未见淡斜绿泥石,"绿泥石壳"中也未见蛇纹石残留,说明"绿泥石壳"与矿石中的脉石矿物成因相同,为成矿晚期残余矿浆直接沉淀结晶生成,非蛇纹石经绿泥石化蚀变生成。证明矿床为晚期岩浆熔离式矿床。The genesis of Sartohay chromities deposits is always controversial,by studying the ＂Chlorites shell＂ known the genesis of the mineral deposits.In this paper, by using optiacal microscopy, X-ray diffraction（XRD） and electron probe microanalysis（EPMA）,the results showed that the mining area of surrounding rock is serpentine,＂Chlorites shell＂ and gangue minerals in the ore had transition relationship in space,they also both have the same mineral composition,is leuchtenbergite.No leuchtenbergite in surrounding rock of serpentine,＂Chlorites shell＂ also didn＇ t see in serpentine resi- dues,it＇s proving that ＂Chlorites shell＇and gangue minerals in the ore have the same genesis.They are metallogenic late residual pulp precipitation crystallization generated directly, not by hauling the chloritization alteration effect generated. The deposit is a late magmatic mineral liquation deposit.

关 键 词：萨尔托海 “绿泥石壳” X-射线粉晶衍射 电子探针分析 

分 类 号：P618.3[天文地球—矿床学]