酒泉某蛇纹石质卵石的研究

甘肃省的酒泉玉有着悠久的开发历史,以"葡萄美酒夜光杯"闻名于世。本文的研究对象是甘肃酒泉某河滩卵石,在查阅甘肃地质资料和文献的基础上,通过对样品的手标本和偏光显微镜下观察,利用折射仪、电子天平等对标本的基本宝石学性质进行测试,并结合化学分析、红外吸收光谱、X粉晶衍射测试手段对卵石的矿物组成进行了进一步分析,得出所研究标本的岩石类型是蛇纹石化大理岩,部分可能为蛇纹石化超基性岩,为该宝玉石资源的开发利用提供了一定的理论指导和参考。

A study of a serpentine gravel in Jiuquan

Jiuquan in Gansu Province has a long history of jade development, which is known as "Grape wines in luminous wine glass". This object of this study is a river floodplain gravel of Jiuquan. On the basis of enquiring geological data and information of Gansu, the samples were observed by visualization and the specimens were studied under the polarizing microscope. The basic gemstone properties were also tested by some instruments. For further study, chemical analysis, infrared absorption spectrum and X powder diffraction were employed to analyze the mineral composition of gravel. It has been found that the type of the rock sample is serpentinized marble probably with some serpentinized ultrabasic rocks. Serpentinized marble mainly contains antigorite and carbonate, thus suitable for engraving. This type of gravel has high gemological value and economic prospects. The results of this study have some theoretical guidance and reference values for the development and utilization of the gem resources.