黄色葡萄石的光谱学特征研究

STUDY ON THE SPECTRAL CHARACTERISTICS OF YELLOW PREHNITE

利用傅里叶变换红外光谱仪、拉曼光谱仪和紫外可见光谱仪等测试分析手段,并结合偏光显微镜及常规宝石学方法,对黄色葡萄石样品进行了系统的测试研究。结果表明,黄色葡萄石具有典型的显微交织结构。红外吸收光谱和拉曼光谱显示了硅氧官能团的振动在900-1100cm^(-1)和400~800cm^(-1)波段产生特征吸收峰,同时OH^-的振动产生了3495cm^(-1)红外吸收峰和320cm^(-1)、390cm^(-1)拉曼吸收峰。紫外可见光谱显示,葡萄石具有430nm和580nm的吸收带,推断其黄色调是由Fe^(3+)致色形成的。

In this paper,we researched the spectral characteristics of yellow prehnite by using Fourie transform infrared spectroscopy,Raman spectroscopy and UV-Vi s absorption spectroscopy,combined with polarizing microscope and common gemmogical methods.The prehnite shows typical micro-intertexture structure.Si-O functions caused characteristic infrared absorption peaks and Raman spectra between 900~1100cm^-1 and 400~800cm^-1.While OH-caused 3495cm^-1 infrared absorption peaks and 320cm^-1,390cm^-1 Raman spectra.In the UV-Vis absorption spectra,yellow prehnite shows 430nm and 580nm bands,so it is inferred that the yellow prehnite may be caused by Fe^3+.