稀土玻璃光纤仿纤维状天然矿物的性质及鉴定特征  

Properties and Identification Characteristics of Counterfeit Fibrous Mineral Specimens Made with REE Glass Fiber

作　　者：曲直 史玉静 沈洪涛 李鹏 张倩[2] QU Zhi;SHI Yujing;SHEN Hongtao;LI Peng;ZHANG Qian(Qingdao Institute of Measurement Technology,Qingdao 266071,China;Gemmological Institute,China University of Geosciences,Wuhan 430074,China;State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]青岛市计量技术研究院,山东青岛266071 [2]中国地质大学(武汉)珠宝学院,湖北武汉430074 [3]中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉430074

出　　处：《宝石和宝石学杂志（中英文）》2023年第5期127-134,共8页Journal of Gems & Gemmology

摘　　要：近期我国连云港市东海县天成集市与网络销售平台上出现了一种自称“天然金红石晶洞”的商品,其内部的发丝状物有红棕色、蓝色等,呈束状聚集,为明确其是否天然及其具体材质,笔者结合X射线粉末衍射、傅里叶变换红外光谱、宝石显微镜、扫描电子显微镜、X射线荧光光谱、核磁共振氢谱、激光剥蚀电感耦合等离子体质谱等测试手段,对市场上新出现的“天然金红石晶洞”样品进行表征。结果表明,样品中的发丝状物质实为非晶的Sm掺杂铝硅基荧光玻璃光纤,Sm^(2+)为其致色元素和荧光激活剂,其中Sm掺杂量约为22039~32331×10^(-6)。伪装成天然围岩的材料则为赤铁矿相,可能由氧化铁烧结制备。Recently,a new material so-called“nature rutile geode”appeared in Tiancheng Market,Donghai County and online sales platforms.To figure out wheather it is natural or not and its detailed composition,and to characterize this newly appeared material,X-ray poweder diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),gem microscope,scanning electron microscope-energy spectrum(SEM-EDS),electron probe-energy spectrum(EPMA-EDS),X-ray fluorescence spectrum(XRF),nuclear magnetic resonance hydrogen spectrum(1 H-NMR),laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS)and other testing methods were employed.The result shows that the so-called“natural rutile”is actually amorphous Sm-doped alumionosilicate fluorescent glass fiber.Sm^(2+)results in its brownish colour and is its activator,Meanwhile,the Sm content is about 22039~32331×10^(-6),and no small organic molecules are observed.The material disguised as natural baserock is maily hematite,which may be prepared by sintered iron oxide.

关 键 词：稀土 玻璃光纤 仿天然矿物 电子探针 激光剥蚀等离子质谱 

分 类 号：TS93[轻工技术与工程]