不同产地绿松石无损检测及岩相结构特征研究

概述了绿松石的使用历史和产地来源。利用质子激发X射线荧光光谱（PIXE）、X射线衍射（XRD）及扫描电镜（SEM）技术对来自伊朗、湖北郧县和西藏等地的绿松石样品进行岩石矿物学特征分析，从成分组成方面探讨绿松石的呈色机理。结果显示，不同产地、不同质地绿松石的成分组成存在较大差别，但主成分含量基本一致；绿松石的颜色主要由其中CuO和Fe2O3的含量比值变化决定，比值由大至小，实现了绿松石颜色由天蓝色到绿色的转变。

Study on Mineralogical Characteristics of Turquoise Samples from Different Provenances by Non-destructive Analysis

The application history and provenance of turquoise were summarized in this paper.Technologies including proton induced X-ray emission (PIXE),X-ray diffraction (XRD) and scanning electron microscope (SEM)were used to study the mineralogical characteristics of several turquoise samples from Iran,Hubei,Tibet and other places.The colorific mechanism was discussed based on the chemical components.The experimental results show that turquoise specimens with different qualities and from different provenances have different chemi- cal compositions,but the contents for their major components are identical.The color of turquoise depends on the content ratio of CuO and Fe_2O_3 and the color changes from sky-blue to green with the decrease of the w(CuO)/w(Fe_2O_3)]ratio.