中国北方珍珠的宝石学特征

详细信息

Gemmological Characteristic of the Northern Pearl of China

1. College of Material Science and Engineering, Yanshan University, Qinhuangdao 066004, China;
2. Qinhuangdao Gem Supervision and Inspection Station, Qinhuangdao 066004, China

摘要: 以三角帆蚌为育珠蚌，产于辽宁的中国北方珍珠为研究对象，采用静水称重法、X射线粉末衍射仪、傅里叶变换红外光谱仪、扫描电子显微镜等仪器测试方法，探究中国北方珍珠的物相组成和内部结构。中国北方珍珠相对密度范围为2.722 1～2.733 5，主要矿物组成为文石，并含有蛋白质；内部结构为叠瓦状结构，且文石层厚度沿半径方向由心部向边部逐渐变薄，北方珍珠的文石层厚薄差为170 nm。
- 中国北方珍珠 /
- 相对密度 /
- 文石 /
- 文石层厚薄差
Abstract: Hyriopsis cumingii is chosen as the pearly mussel. The gemmological characteristics of the northern pearl produced from Liaoning Province of China were investigated, with the help of hydrostatic weighing method, X-ray powder diffraction, Fourier transform infrared spectroscopy and scanning electron microscope. The testing results show that the relative density of the northern pearl of China is from 2.722 1-2.733 5. The mineral components of the northern pearl of China are aragonite and protein. The structure of the northern pearl of China is characterized as a form of “brick wall”. The thickness between aragonite layers of the northern pearl of China is 170 nm.
- northern pearl of China /
- relative density /
- aragonite /
- thickness between aragonite layers

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