紫色端砚的振动光谱学分析与产地特征研究  

Spectroscopic Analysis and Origin Characteristic of Purple Duanxi Inkstone

作　　者：郑浚豪 梁建权 芦明媚 华雯娴 陈琦 ZHENG Junhao;LIANG Jianquan;LU Mingmei;HUA Wenxian;CHEN Qi(S chool of Ocean&Earth Science,Tongji University,Shanghai 200092,China;Zaoqing Zhongyi Mingyan Co.,Ltd.,Zhaoqing 526000,China;Shanghai Junhao Vocational Skills Training Center,Shanghai 200050,China;School of Humanities,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学海洋与地球科学学院,上海200092 [2]肇庆中艺名砚有限公司,广东肇庆526000 [3]上海竣豪职业技能培训中心,上海200050 [4]同济大学人文学院,上海200092

出　　处：《宝石和宝石学杂志（中英文）》2023年第6期58-64,共7页Journal of Gems & Gemmology

基　　金：上海市科委项目(18DZ2281300)。

摘　　要：以端砚中的紫色品种老坑、坑仔岩、麻子坑以及宋坑样品为研究对象,利用电子天平、偏光显微镜、红外光谱以及拉曼光谱等测试方法对其进行了研究,以揭示其矿物组成、宝石学特征及振动光谱特征。结果表明,四个品种端砚样品为粉砂质-泥质结构,块状构造;密度在2.68~2.83 g/cm 3,硬度3~4,结构致密,韧性较好;颜色以紫色为主,抛光面多呈土状光泽。红外光谱和拉曼光谱测试结果显示,四个品种端砚样品在主要组成矿物种类上具有相似性,主要由石英、绢云母和金红石组成,而杂质矿物则有绿泥石、独居石和菱锰矿等。其中,宋坑样品中的石英含量较多,相对密度小于其他三个品种。端砚中的石英,促进了其研磨性能,而绿泥石、云母等矿物的存在使其储墨性优良。综上,通过常规宝石学特征、红外光谱和XRD可将老坑、坑仔岩、麻子坑以及宋坑紫色端砚品种与紫色洮砚进行区分。Samples of the purple varieties of Duanxi inkstone:Laokeng,Kengzaiyan,Mazikeng,and Songkeng were studied using test instruments including electron balance,polarizing microscope,infrared absorption spectroscopy,and Raman spectroscopy to reveal their mineral components,gemmological characteristics and vibrational spectroscopic features.The results show that the samples of the four varieties of Duanxi inkstone are of chalky-muddy structure with massive structure.The density ranges from 2.68 to 2.83 g/cm 3,hardness 3-4,dense structure and good toughness.The colour is dominated by purple,and the polished surface is mostly earthy luster.Infrared spectroscopy and Raman spectroscopy test results show that the four varieties of Duanxi inkstone samples have similarity in the main constituent mineral species,mainly composed of quartz,sericite and rutile,while the impurity minerals are chlorite,monazite,rhodochrosite and other manganese ore.Among them,the Songkeng samples contain more quartz and have a lower relative density than the other three varieties of samples.The presence of quartz in the Duanxi inkstone promotes its abrasive properties,while the presence of minerals such as chlorite and mica makes it excellent for ink storage.Through the preliminary comparison of conventional gemmological features,infrared absorption spectroscopy and XRD,the four varieties of purple Duanxi inkstone and purple Taoyan samples can be distinguished by their appearances and mineral components.

关 键 词：紫色端砚 紫色洮砚 宝石学特征 红外光谱 拉曼光谱 

分 类 号：P57[天文地球—矿物学] TS93[天文地球—地质学]