贵州省织金县打麻厂矿区含稀土磷矿中稀土元素赋存规律  

The occurrence of rare earth elements(REE)in the REE-bearing phosphate ores of the Damachang block in Zhijin County,Guizhou Province,China

作　　者：陈文祥 郑松[2,3] 严春杰[1] 梁冬云 洪秋阳 李波 孟庆田 陈永科 左佳丽[2] CHEN Wen-xiang;ZHENG Song;YAN Chun-jie;LIANG Dong-yun;HONG Qiu-yang;LI Bo;MENG Qing-tian;CHEN Yong-ke;ZUO Jia-li(Engineering Research Center of Nano-Geomaterials of Ministry of Education,Faculty ofMaterials Science and Chemistry,China University of Geosciences,Wuhan 430074,China;Guizhou Central Laboratory of Geology and mineral resources,Guiyang 550018,China;Engineering Technology Innovation Center of Mineral Resources Explorations in Bedrock Zones,Ministry of Natural Resources,Guiyang 550081,China;Guangdong Institute of Comprehensive Utilization of Resources,Guangzhou 510650,China;Guizhou Geology and Mineral Exploration and Development Bureau 104 geological Brigade,Douyun 558000,China)

机构地区：[1]中国地质大学(武汉)材料与化学学院,湖北武汉430074 [2]贵州省地质矿产中心实验室,贵州贵阳550018 [3]自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081 [4]广东省资源综合利用研究所,广东广州510650 [5]贵州省地质矿产勘查开发局一0四地质大队,贵州都匀558000

出　　处：《矿物学报》2022年第2期203-212,共10页Acta Mineralogica Sinica

基　　金：贵州省地质勘查基金公益性基础性项目(编号:2016-09-2)。

摘　　要：为了定量查明贵州省织金县打麻厂矿区含稀土磷矿中稀土元素赋存规律,选取矿区具有充分代表性的样品,采用化学分析、ICP-MS分析、MLA分析、显微镜分析、单矿物分析、能谱分析、X射线衍射分析、扫描电镜分析等多种分析测试手段对样品进行分析检测。结果表明,矿区钇、镧、铈、钕4种稀土氧化物占稀土氧化物总量的82.97%,为高钇轻稀土。87.015%的稀土赋存在胶磷矿中,赋存在白云石、石英等硅质矿物、粘土类矿物、黄铁矿等矿物中的稀土分别占稀土总量的8.478%、2.604%、1.365%、0.367%。首次发现独立矿物磷铝铈矿和含稀土矿物磷铝锶石,以独立矿物形式存在的稀土仅占稀土总量的0.1047%,赋存在磷铝锶石中的稀土占稀土总量的0.0646%。赋存在胶磷矿和白云石中的磷的比例明显高于稀土,而赋存在石英等硅质矿物、粘土类矿物、黄铁矿、稀土独立矿物以及磷铝锶石中的稀土则显著高于磷。磷与稀土含量的相关系数R=0.9095,呈正相关关系。In order to quantitatively identify the occurrence regularity of rare earth elements(REE)in REE-bearing phosphate ores in the Damachang block,Zhijin County,Guizhou Province,by using means of chemical analysis,ICP-MS analysis,MLA analysis,Microscopic analysis,Single Mineral analysis,Energy spectrum analysis,X-ray diffraction(XRD),Scanning electron microscopy(SEM)analysis,etc.,we have tested the sufficient representative ore samples selected from this area.The results show that the content of 4 oxides of yttrium,lanthanum,cerium,and neodymium account for 82.97%of the total content of all REE oxides in this ore which is the high yttrium LREE ore.The REE occurred mainly in collophanite,dolomite,silica minerals,clay minerals,and pyrite,with REE occupancy rates of 87.015%,8.478%,2.604%,1.365%,and 0.367%,respectively.The independent REE mineral of florencite and REE-bearing mineral of goyazite have been firstly discovered in the ore.The REE occurred in the form of independent minerals is accounted for only 0.1047%of the total REE in the ore.The REE occurred in goyazite is accounted for 0.0646%of the total REE in the ore.The proportions of phosphorus in collophanite and dolomite are significantly higher than those of the REE,while the proportions of the REE in siliceous minerals such as quartz,clay minerals,pyrite,REE independent minerals,and goyazite are significantly higher than those of phosphorus.The correlation coefficient(R)of phosphorus and the REE contents is 0.9095,indicating that phosphorus and the REE is positively correlated.

关 键 词：织金 含稀土磷矿 磷块岩 稀土 赋存规律 

分 类 号：P618.7[天文地球—矿床学]