染色做黄皮仿田黄粘土矿物质玉的鉴定  

Identification of Clay Mineral Jade with Dyed Yellow Skin to Imitate Tianhuang

作　　者：张兰馨 陈涛[1,3] 姚春茂 郑金宇 ZHANG Lanxin;CHEN Tao;YAO Chunmao;ZHEN Jinyu(Gemmological Institute,China University of Geosciences,Wuhan 430074,China;School of Earth Resources,China University of Geosciences,Wuhan 430074,China;Hubei Gems and Jewelry Engineering Technology Research Center,Wuhan 430074,China;Gemstone Jewellery Company,Fuzhou 350001,China;School of Earth Sciences,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]中国地质大学(武汉)珠宝学院,湖北武汉430074 [2]中国地质大学(武汉)资源学院,湖北武汉430074 [3]湖北省珠宝工程技术研究中心,湖北武汉430074 [4]福州金玉满堂珠宝公司,福建福州350001 [5]中国地质大学(武汉)地球科学学院,湖北武汉430074

出　　处：《宝石和宝石学杂志（中英文）》2024年第3期30-38,共9页Journal of Gems & Gemmology

基　　金：教育部珠宝首饰应用技术协同创新中心平台项目(职成教函[2019]10号);广东省教育厅产教融合创新平台项目(粤教科函[2021]8号);广州番禺职业技术学院科技项目——基于多信息源技术在和田玉颜色分级量化评定中的应用研究(2021KJ03)。

摘　　要：由于经济利益的驱使,市场上田黄仿制品泛滥。本文选取经过人为作伪加工(做皮和染色)的不同石质的黄皮田黄仿制品为研究对象,使用宝石显微镜、红外光谱(FTIR)、紫外-可见吸收光谱(UV-Vis)、X射线荧光光谱(XRF)进行测试,以探究无损鉴定田黄仿制品的方法。结果显示,染色黄皮仿制品样品与天然田黄石皮和石肉之间的颜色分布形态不同、表面凹坑形态不同、且表面光泽不同。红外光谱测试表明,黄皮田黄仿制品的主要成分有以地开石为主(地开石质)、伊利石为主(伊利石质)、斜绿泥石为主(斜绿泥石质)和高岭石为主(高岭石质)。对紫外-可见漫反射光谱(DRS)进行一阶导和二阶导和K-M转换后一阶导和二阶导图谱分析,观察到田黄天然黄色石皮中存在针铁矿与赤铁矿,但经染色处理的田黄仿制品的黄色石皮并没有类似的峰。XRF测试结果发现田黄仿制品的染色黄皮中Pb元素含量出现异常富集。Driven by financial benefit,the market is filled with Tianhuang imitations.In this study,different imitations of Tianhuang that have been artificially treated(skinned and dyed)are selected as the research objects.Gem microscope,FTIR,UV-Vis spectra and XRF tests are performed to explore the method for non-destructive identification of Tianhuang imitations.The results show that the colour distribution of the skin and the internal,the surface pit morphology,and the surface luster of dyed imitation samples are different from natural Tianhuang.Infrared spectra indicate that the main components of imitations with yellow skin are diopside,illite,chlorite and kaolinite.Analysis of first and second derivatives of ultraviolet-visible diffuse reflectance spectroscopy(DRS)and first and second derivatives after K-M transformation reveals that natural yellow skin Tianhuang has peaks corresponding to hematite and goethite,while the yellow skin of dyed imitations does not show similar peaks.XRF testing results reveal abnormal enrichment of Pb elements in the dyed yellow skin of Tianhuang imitations.

关 键 词：田黄仿制品 无损鉴定 显微特征 谱学特征 成分分析 

分 类 号：TS93[轻工技术与工程]