XIANG Xian-biao, ZHANG Yi-xiang, LAI Wen-bo. An Analysis of Infrared Spectra of Red-yellow Jadeites by Heat Treatment[J]. Journal of Gems & Gemmology, 2011, 13(2): 31-37.
Citation: XIANG Xian-biao, ZHANG Yi-xiang, LAI Wen-bo. An Analysis of Infrared Spectra of Red-yellow Jadeites by Heat Treatment[J]. Journal of Gems & Gemmology, 2011, 13(2): 31-37.

An Analysis of Infrared Spectra of Red-yellow Jadeites by Heat Treatment

More Information
  • Received Date: January 11, 2011
  • Revised Date: April 01, 2011
  • The value of red-yellow jadeites is very different depending on whether they have been processed with heat treatment, With an increasing demand for red-yellow jadeites, it has been a key as well as difficult issue to distinguish whether the jadeites are experienced heat treatments or not. In this paper, the heat treatment experiments are carried out on the red-yellow jadeites, and the infrared spectra of the jadeites before and after heat treatment are also compared, The results show that different spectral characteristics, i. e, the variation of intensity for four absorption peaks due to the hydroxyl structure of jadeite: (1) obvious changes appear at 3 000-4 000 cm-1 from U structure before heat treatment to V structure after heat treatment; (2) small changes appear at 3 622- 3 628 cm-1 or 3 670 cm-1.These features could be used as the assistant diagnostic index to determine whether the jadeites have been heat treated or not.
  • [1]
    杨燕,夏群科,李佩,等.辉石中结构羟基变温行为的红外光谱初步研究[J].岩石矿物学杂志,2007,26(4):335-339.
    [2]
    夏群科,陈道公,郭立鹤,等.汉诺坝幔源单斜辉石巨晶中的结构水:红外光谱观察[J].矿物学报,1999,19(2):161-164.
    [3]
    樊孝玉,吴秀玲,孟大维,等.大别山超高压硬玉石英岩中的水:来自红外光谱的证据[J].地球科学--中国地质大学学报,2007,32(2):167-174.

Catalog

    Article Metrics

    Article views (127) PDF downloads (29) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return