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现代地质 ›› 2007, Vol. 21 ›› Issue (Suppl): 35-40.

• 地质学 • 上一篇    下一篇

具多环带的锂电气石振动光谱分析

林善园1,2,刘琰1,2,蔡克勤1,2,葛文胜1,2   

  1. 1中国地质大学 地质过程与矿产资源国家重点实验室,北京100083;
    2中国地质大学 岩石圈构造、深部过程及探测技术教育部重点实验室,北京100083
  • 收稿日期:2006-11-20 修回日期:2006-12-30 出版日期:2007-08-20 发布日期:2007-08-20
  • 作者简介:林善园, 男,副教授,博士研究生,1968年出生,矿物学、岩石学、矿床学专业,主要从事电气石矿物、矿床的研究工作。
  • 基金资助:

    中国地质调查局地质调查项目(1212010561604);中国地质大学地质过程与矿产资源国家重点实验室基金项目(GPMR0530)

Analysis of Vibrational Spectra for Li-tourmaline with Color Zonings

LIN Shan-yuan1,2,  LIU Yan1,2, CAI Ke-qin1,2,GE Wen-sheng1,2   

  1. 1State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing100083, China;
    2Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosciences, Beijing100083, China
  • Received:2006-11-20 Revised:2006-12-30 Online:2007-08-20 Published:2007-08-20

摘要:

色带电气石物性表征的不均匀性是其内部结构和化学成分不均匀性的表现。通过电子探针分析、红外吸收光谱分析及拉曼光谱分析,对新疆阿尔泰可可托海4个色带电气石样品的这一特性进行实证并讨论。电子探针分析结果说明Fe和Mn的含量及价态与电气石颜色的形成关系密切。因具两个不同的OH振动吸收谱带及1 352~1 294 cm-1范围的BO3振动吸收谱带,4个样品归属为锂电气石。拉曼光谱分析结果显示,SiO2含量是造成Si-O(非桥氧)伸缩振动谱峰和[Si6O18]12-环对称伸缩振动谱峰位移的主要原因。

关键词: 电气石, 色彩来源, 迁移的离子, 红外线光谱, 拉曼光谱, 新疆

Abstract:

The different crystal structures and chemical compositions in tourmalines with color zonings account for the inhomogeneous physical characters of these tourmalines. EMPA, IR and Raman spectrometers were used to detect four groups of tourmalines and crystal structures and chemical compositions of these crystals were discussed. The chemical compositions of these tourmalines indicated that the amount of TFe and TMn are greatly connected with the color causes of tourmalines. Four groups of tourmalines were assigned to Li-tourmalines because of the chemical compositions and characters of infrared spectra. The chemical composition also can tell us that the amount of SiO2  cause the shifts of Si-O and [Si6O18]12-.

Key words: tourmaline, color genesis, transitional ions, infrared spectra, Raman spectra, Xinjiang

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