“金鳞石”(锂云母玉)的宝石学特征

郑秋菊; 廖任庆; 刘志强; 郭杰; 刘江疆

“金鳞石”(锂云母玉)的宝石学特征

1. 深圳百泰投资控股集团有限公司检测中心, 广东深圳 518083;
2. 深圳技师学院, 广东深圳 518116;
3. 中国地质大学武汉珠宝学院检测中心, 湖北武汉 430074;
4. 广东正科金银珠宝检测中心, 广东深圳 518020

详细信息

作者简介:
郑秋菊(1978-),女,硕士,主要从事珠宝玉石、贵金属检测和研究工作。

中图分类号: TS93
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出版历程
- 收稿日期: 2016-05-23

Gemmological Characteristic of “Jinlinshi” (Lepidolite Jade)

1. Testing Center, Shenzhen Batar Investment Holding Group Co., Ltd., Shenzhen 518083, China;
2. Shenzhen Institute of Technology, Shenzhen 518116, China;
3. Testing Center of Gemmological Institute, China University of Geosciences, Wuhan 430074, China;
4. Guangdong Zhengke Gold and Silver Jewelry Testing Center, Shenzhen 518020, China

摘要

摘要: 采用常规宝石学测试，并结合扫描电子显微镜、偏光显微镜、傅里叶红外光谱仪、X射线能谱仪、X射线粉末衍射仪、激光拉曼光谱仪等大型仪器，对市场上出现的一种商业俗称“金鳞石”的宝石材料的宝石学特征、矿物组成、化学成分等进行了测试与分析。结果表明，“金鳞石”样品为锂云母玉，其折射率为1.55(点测)，摩氏硬度为2～3，相对密度为2.83；红外光谱和拉曼光谱的测试结果表明样品与云母的图谱基本一致；扫描电子显微镜观察结果显示样品为矿物集合体，具有极完全解理，参差状断口，细粒鳞片变晶结构；X射线能谱结果显示样品主要含有Si、Al、K、F、O等；偏光显微镜、X射线粉末衍射分析结果均表明样品主要由锂云母和少量白云母组成，按照《GB/T 16552—2010 珠宝玉石名称》相关规定，应定名为锂云母玉。长波紫外荧光下观察锂云母玉样品内部网格状裂隙内的荧光呈强蓝白色，与锂云母玉样品主体弱紫色荧光颜色不一致，显微镜下观察发现裂隙表面的光泽差异明显，伴有密集的气泡群，表明锂云母玉样品经过充填处理。
- 金鳞石 /
- 锂云母 /
- 白云母 /
- 锂云母玉
Abstract: The gemmological characteristics, mineral components, chemical compositions of “Jinlinshi” called by salers were researched by the conventional gemmological tests, scanning electron microscope (SEM), polarizing microscope, Fourier transform infrared spectrometer (FTIR), X-ray energy spectrometer (EDS), X-ray powder diffraction spectrometer (XRD), laser Raman spectroscopy (Raman), etc. The results showed that the refractive index of “Jinlinshi” sample is 1.55 (point measurement), and Mohs hardness is 2-3, and relative density is 2.83. FTIR and Raman test results agreed with spectrum of mica.The analysis of SEM indicated that the “Jinlinshi” sample is mineral aggregate, which has perfect cleavage, uneven fracture and scale crystalloblastic texture. EDS results showed that the “Jinlinshi” sample is mainly composed of Si, Al, K, F and O, etc. The analysis of polarizing microscope and XRD results showed that the “Jinlinshi” samples are mainly composed of lepidolite and minor muscovite, which are closely contacted and randomly arranged. According to GB/T 16552-2010 Gems─Nomenclature, the “Jinlinshi” sample should be named as “Lepidolite jade”. The interal gridded fracture of “Jinlinshi” sample showed strong blue and white fluorescence under long wave ultraviolet, which is different with the weak violet fluorescence of “Jinlinshi” sample. By microscope, the difference of the surface gloss of fracture was obvious, with the dense bubble group. It can be concluded that the “Jinlinshi” samples were filled.
- “Jinlinshi” /
- lepidolite /
- muscovite /
- lepidolite jade

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参考文献(13)

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文章访问数: 397
HTML全文浏览量: 96
PDF下载量: 28
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“金鳞石”(锂云母玉)的宝石学特征

作者简介: 郑秋菊(1978-),女,硕士,主要从事珠宝玉石、贵金属检测和研究工作。

计量

出版历程

Gemmological Characteristic of “Jinlinshi” (Lepidolite Jade)

计量

出版历程

目录

作者简介:
郑秋菊(1978-),女,硕士,主要从事珠宝玉石、贵金属检测和研究工作。