阿曼东部铬铁矿地球化学特征研究  

Geochemical Characteristics of Chromite in Eastern Oman

作　　者：李霞 姚远 LI Xia;YAO Yuan(School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Jiangxi JCC Yinzhushan Mining Co.,Ltd,Guixi 335400,China)

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]江西江铜银珠山矿业有限公司,江西贵溪335400

出　　处：《铜业工程》2023年第3期120-126,共7页Copper Engineering

基　　金：江西理工大学博士启动基金项目(205200100055);江西省教育厅科技项目(GJJ200855)资助。

摘　　要：铬是世界上重要的战略金属之一,铬铁矿作为唯一一种可以提炼铬的矿石,在工业中具有不可替代的作用。为进一步了解铬铁矿的成因和化学特征,通过扫描电子显微镜(SEM)和能谱仪(EDS)研究阿曼东部蛇绿岩中铬铁矿的镜下特征和相关地球化学参数(例如Cr#),进而推测该铬铁矿可能的成因和类型。研究发现:阿曼东部铬铁矿Cr#值大于0.6,ω(TiO_(2))小于0.3%,从而推测出阿曼东部铬铁矿属于豆荚状铬铁矿;铬铁矿Cr#在63~68之间,表明阿曼东部铬铁矿为高铬型铬铁矿;阿曼东部铬铁矿原始岩浆可能具有似玻安岩的性质。One of the world's most important strategic metals is chromium.As the only ore that can extract chromium,chromite has an irreplaceable role in industry.In order to further understand the genesis and chemical characteristics of chromite,this paper studied the microscopic characteristics and related geochemical parameters(such as Cr#)of chromite ophiolite of Eastern Oman by scanning electron microscopy(SEM)and energy spectroscopy(EDS),and then speculated the possible genesis and type of the chromite,and found that the Cr# value of chromite in Eastern Oman was higher than 0.6 andω(TiO_(2))is lower than 0.3%.Therefore,the following conclusions are drawn:the Eastern Oman chromite belongs to the Podiform Chromite;the chromite Cr# is between 63 and 68,indicating that the chromite in Eastern Oman is a high chromium chromite;the original magma of chromite in Eastern Oman may have a boninite-like nature.

关 键 词：豆荚状铬铁矿 高铬型 蛇绿岩 阿曼东部 玻安岩 

分 类 号：P571[天文地球—矿物学]