Source Constraints on Turquoise of the Erlitou Site by Infrared Spectra
REN Jia1, YE Xiao-hong2, WANG Yan1, LUO Shu-qiong1, SHI Guang-hai1*
1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China 2. Institute of Archaeology, Chinese Academy of Social Sciences, Beijing 100710, China
Abstract：Shiyan district in Hubei province is a famous locality of high-quality turquoise with brightcolor, finegrain in the world. Erlitou archaeologicalsite, which is about 300km north to the Shiyan Turquoise mine, has been excavated a remarkable number of turquoise artifacts since 2002. Some researchers infer that there was “a road of turquoise” between the two sites in history. In order to check the inference, and identify local features of the turquoises found in Shiyan, and Eelitou site as well, spectra of three turquoise groups from Shiyan, Hubei and one group of Erlitou unearthed samples were obtained by means of IR.Theirspectrahavevisible differences in the 1 200～950 and 700～400 cm-1 range. Peak 1 174 cm-1 appears only in samples from Wenfeng, and from 700 to 400 cm-1, 5 peaks show in samples from Wenfeng while 7 peaks emerge from the other two sites. Turquoises in Erlitou site have similar spectra to those from Qingu and Yungaisi, and are more similar to Yungaisi of peak around 1 159 cm-1. According to A=lg(1/T), intensity of transmittance spectra were calculated and then Ratios(A783 cm-1/A837 cm-1) were yielded. The ratios of samplesfrom Qingu, Wenfeng, Yungaisi and Erlitou site are 0.819～0.920，0.870～1.010，0.806～0.860 and 0.827～0.878 respectively, allowing for a suggestion that turquoise in Erlitou site was the most probable from Yungaisi. This research can be used as example for identifying origin of the unearthed turquoise relics, which is more likely a good tool for archeological research.
任 佳1，叶晓红2，王 妍1，罗书琼1，施光海1* . 二里头遗址绿松石的红外光谱产地识别 [J]. 光谱学与光谱分析, 2015, 35(10): 2767-2772.
REN Jia1, YE Xiao-hong2, WANG Yan1, LUO Shu-qiong1, SHI Guang-hai1* . Source Constraints on Turquoise of the Erlitou Site by Infrared Spectra . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(10): 2767-2772.
[1] Erlitou Field Work Team(中国社会科学院考古研究所二里头工作队). Archaeology(考古), 2004, 11: 3. [2] XU Liang-gao, ZHAO Chun-yan(徐良高, 赵春燕). Archaeology of the Xia, Shang and Zhou Dynasty(三代考古-四), 2011, 497. [3] YE Xiao-hong, REN Jia, et al(叶晓红，任 佳，等). Quaternary Sciences(第四纪研究), 2014, 34(1): 212. [4] Jagannatha R B, Frost R L, Weier M L, et al. Journal of Near Infrared Spectroscopy, 2006, 14(4): 241. [5] Sharma K B N, Moorthy L R, Reddy B J, et al. Physics Letters A, 1988, 132(5): 293. [6] Frost R L, Williams P A, Martens W, et al. Journal of Raman Spectroscopy, 2002, 33(4): 260. [7] CHEN Quan-li, ZHANG Yan(陈全莉，张 琰). Journal of Gems and Gemmology(宝石和宝石学杂志), 2005, 7(4): 13. [8] CHEN Quan-li, QI Li-jian，et al(陈全莉，亓利剑，等). Earth Science-Journal of China University of Geosciences(地球科学-中国地质大学学报), 2008, 33(3): 416. [9] SHI Zhen-rong, CAI Ke-qin(石振荣，蔡克勤). Acta Petrologicaet Mineralogical(岩石矿物学杂志), 2008, 27(2): 164. [10] XIONG Yan, CHEN Quan-li(熊 燕，陈全莉). Infrared Technology(红外技术), 2011, 33(10): 610. [11] HE Xu, CHEN Lin, et al(何 煦，陈 林，等). Rock and Mineral Analysis(岩矿测试), 2011, 30(6): 709. [12] WENG Shi-fu(翁诗甫). Fourier Transform Infrared Spectrometer(傅里叶变换红外光谱仪). Beijing: Chemical Industry Press(北京: 化学工业出版社), 2005, 327.
