摘要
寿山金狮峰田石因其品质和形成环境上与田黄具有相似之处,而备受关注。采用宝石显微镜、X射线粉末衍射仪、红外光谱、拉曼光谱、扫描电子显微镜和能谱仪进行测试,获得外观特征、谱学特征、矿物组成和微形貌特征。综合测试结果发现,从外观特征方面看,金狮峰田石石形呈次棱角状,通常完整或部分包裹黑色石皮,外皮上有较大而深的凹坑,石皮上和石肉中均可见“金砂”,石肉颜色丰富,常见黄色、红色、白色,颜色分明;从矿物组成上看,金狮峰田石以无序地开石为主要组成矿物,外皮存在杂质矿物如无定形碳、黄铁矿、方解石、白云石、青金石、赤铁矿、石盐和石英,石肉中存在杂质矿物如叶蜡石、赤铁矿、锐钛矿、硫磷铝锶石和锆石。结合外观特征和矿物组成可以对金狮峰田石进行科学的品种鉴定。
As an excavated stone(dickite) from Shoushan, Jinshifeng stone catches many attentions since its similarities with Tianhuang in quality and formed environment. The appearance characteristics, spectroscopic characteristics, mineral components, and micro-morphological characteristics of the stone have been investigated using gemmological microscope, X-ray diffraction spectrometer(XRD), Fourier transform infrared spectrometer(FTIR), Raman spectrometer(Raman), and scanning electron microscope(SEM) with its energy dispersive spectrometers(EDS). The results show that in the terms of appearance characteristics, Jinshifeng stone has black weathered surface with many relatively big and deep pits. Golden dots could be found in both surface and interior, and the stone shows subangular appearance. The interior of the stone is rich in colour, commonly yellow, red, and white, and the colour has sharp boundary. In the terms of mineral components, disordered dickite is the main mineral component of Jinshifeng stone, and there are some impurity minerals existing on the weathered surface, such as amorphous carbon, pyrite, calcite, dolomite, lazurite, hematite, halite, and quartz. The interior also has complicated impurity mineral components including pyrophyllite, hematite, anatase, svanbergite and zircon. These findings provide a solid evidence base for the scientific species identification of Jinshifeng stone combining the appearance characteristics and mineral components characteristics.
作者
郑金宇
陈涛
刘云贵
徐行
姚春茂
周征宇
ZHENG Jinyu;CHEN Tao;LIU Yungui;XU Xing;YAO Chunmao;ZHOU Zhengyu(Gemmological Institute,China University of Geosciences,Wuhan 430074,China;School of Earth Sciences,China University of Geosciences,Wuhan 430074,China;College of Gems and Materials,Hebei GEO University,Shijiazhuang 050031,China;School of Ocean and Earth Science,Tongji University,Shanghai 200092,China)
基金
国家重点研发计划项目(2018YFF0215403)
中国地质大学(武汉)珠宝检测技术创新中心,文章编号CIGTWZ-2021027。
关键词
金狮峰田石
外观特征
谱学特征
矿物组成
宝石学特征
Jinshifeng stone
appearance characteristic
spectroscopic characteristic
mineral component
gemmological characteristic
