Abstract：Xiuyan, Liaoning was an important locality of jade material of the Red Mountain Culture in the Neolithic Age in Chinese history where there are two types of raw material of nephrite jades, namely gravel nephrite jade (Hemo Yu in Chinese) and old nephrite jade (Lao Yu in Chinese). In the present paper, Laser Raman spectrum technique was applied to analyze the graphite enclaves in the nephrite jades of the two types of materials. The results show that the graphite enclaves in the two types of jades have different characteristics of Raman spectra, indicating that they probably were formed under different geological conditions, or originated from different ore-forming periods or were exploited from different section of ore body. Hence, laser Raman spectrum technique could be used as a supplementary measure for nondestructive detection to determine the occurrence of jades.
Key words：Laser Raman spectrum;Graphite enclave;Nephrite jade;Occurrence of jade;Xiuyan of Liaoning
[1] WANG Shi-qi，ZHAO Chao-hong，YU Guong，et al(王时麒，赵朝红，于 洸，等). China Xiuyan Jade(中国岫岩玉). Beijing: Science Press(北京：科学出版社)，2007. [2] WANG Shi-qi，DUAN Ti-yu，ZHENG Zi-zi(王时麒，段体玉，郑姿姿). Acta Petrologica et Mineralogica(岩石矿物学杂志)，2002，21：79. [3] ZOU Tian-ren，GUO Li-he，LI Wei-hua，et al(邹天人，郭立鹤，李维华，等). Acta Petrologica et Mineralogica(岩石矿物学杂志)，2002，21，supp：72. [4] HU Kai，LIU Ying-jun，Willeins R W T(胡 凯，刘英俊，Willeins R W T). Chinese Science Bulletin(科学通报)，1992, 37(14): 1302. [5] Wopenke B，Pasteris J D. American Mineralogist，1993，78：533. [6] Cancado L G，Takai K，Enoki T，et al. Carbon，2008，46(2)：272. [7] XIONG De-xin，SUN Xiao-ming，ZHAI Wei，et al(熊德信，孙晓明，翟 伟，等). Acta Geologica Sinica(地质学报)，2006, 80(9)：1448. [8] LIAO Zong-ting，ZHOU Zheng-yu(廖宗廷, 周征宇). Journal of Gems and Gemmology(宝石与宝石学杂志)，2003，5(2)：22. [9] YUAN Xue-mei，ZHAO Chao-hong，WANG Jin-ping，et al(员雪梅，赵朝洪，王金平，等). Cultural Relics of Central China(中原文物)，2007, (1)：88. [10] YANG Ping，QIU Zhi-li，CHEN Bing-hui，et al(杨 萍，丘志力，陈炳辉，等). Journal of Gems and Gemmology(宝石与宝石学杂志)，2009，11(1)：1.
