摘要
金刚石是均质性矿物 ,但在偏光镜下常常显示非均质性。这给宝石鉴定带来了一定的困难。本文利用偏光显微镜研究了 2 4金刚石在正交偏光显微镜下的特性及其定向红外光谱 ,指出金刚石的非均质性与杂质元素如氮、硼和氢的分布不均匀有关 ,包裹体的存在是产生晶格畸变 (塑性变形 )的重要原因。这一结果与利用红外光谱。
s: Diamond is an isotropic mineral. However, it always shows anisotropic properties under polarized microscope. It makes geologist confused. In this article, we studied the optical properties of 24 diamonds under the polarized microscope. Besides, we also studied the orientated infrared spectra data and made the semi quantitative calculation of octahedron diamond. It point out that the occurrence of anisotropic in diamonds are not only due to unevenly distributed impurities e.g. nitrogen, boron and hydrogen, but also the existence of inclusions which induce lattice distortion or plastic deformation. This result can match with the conclusion from the study of the Infrared Spectra, Raman Spectra and Cathodoluminescence.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2002年第2期114-116,共3页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
广东省自然科学基金资助项目 ( 980 2 6 9)
关键词
金刚石
晶格畸变
塑性变形
非均质性
natural diamond
plastic deformation
infrared spectra
