Study on the FTIR Spectra of OH in Olivines from Mengyin Kimberlite
AI Qun1, YANG Zhi-jun1，2*, ZENG Xiang-qing1, ZHENG Yun-long1, HU Piao-ye1
1. Department of Geoscience, Sun Yat-Sen University, Guangzhou 510275, China 2. Guangdong Provincial Key Laboratory of Mineral Resource Exploration & Geological Processes, Guangzhou 510275, China
Abstract：The results of FTIR spectra study of OH in olivines from Mengyin kimberlite show that there are more than 60 OH absorption peaks in the range of 3 800～3 000 cm-1. We identified four major spectral features in the OH absorption bands of kimberlitic olivines. One is with νOH in the range of 3 800～3 700 cm-1, which is caused by the vapour of the room circumstance, and can not be regarded as intrinsic or non-intrinsic νOH of the olivines. Another one is with νOH in the range of 3 710～3 620 cm-1, which belongs to three “water”-bearing minerals including serpentine, talc and Mg-bearing amphiboles, which is the non-intrinsic νOH of the olivines. There is the possibility that H in hydrous minerals mainly entered into olivines during post-emplacement processes of the kimberlite magma. The third one is with νOH in the range of 3 620～3 425 cm-1, which originated from H occupying the Si-defect in the olivine structure, forming humite-like defects, and/or the defects that H occupies (Mg,Fe)-depletion, which is certainly attributed to the intrinsic νOH of the olivines. In this case, H possibly entered into olivines following its immersion in the high temperature and rich fluid kimberlite magma in the mantle circumstance. The last one is with νOH in the range of 3 425～3 000 cm-1. In this area, νOH is assigned to fluid inclusions of the olivines, and is the non-intrinsic νOH of olivines. Fluid inclusions can enter into the olivines either during post-emplacement processes of the kimberlite magma or during the periods that olivines were formed in the mantle.
艾 群1，杨志军1，2*，曾祥清1，郑云龙1，胡飘野1 . 山东蒙阴金伯利岩中橄榄石的OH红外光谱研究 [J]. 光谱学与光谱分析, 2013, 33(09): 2374-2378.
AI Qun1, YANG Zhi-jun1，2*, ZENG Xiang-qing1, ZHENG Yun-long1, HU Piao-ye1 . Study on the FTIR Spectra of OH in Olivines from Mengyin Kimberlite . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(09): 2374-2378.
[1] GUO Li-he, LIN Xing-yuan, XIE Man-ze, et al(郭立鹤，林兴源，谢漫泽，等). Acta Geologica Sinica(地质学报), 1998，72(2): 138. [2] HAO Yan-tao, XIA Qun-ke, YANG Xiao-zhi, et al(郝艳涛，夏群科，杨晓志，等). Acta Petrologica Sinica(岩石学报), 2006, 22(6): 1713. [3] HAO Yan-tao, XIA Qun-ke, YANG Xiao-zhi(郝艳涛，夏群科，杨晓志). Acta Petrologica et Mineralogica(岩石矿物学杂志), 2007, 26(2): 130. [4] XIA Qun-ke, CHEN Dao-gong, GUO Li-he, et al(夏群科，陈道公，郭立鹤，等). Scientia Geologica Sinica(地质科学), 2000，35(2): 219. [5] ZHANG Hong-fu, YING Ji-feng, TANG Yan-jie, et al(张宏福，英基丰，汤艳杰，等). Acta Petrologica Sinica(岩石学报), 2006, 22(9): 2279. [6] ZHU Bei-bei, WANG Qin, WANG Liang-shu，et al(朱蓓蓓，王 勤，王良书，等). Geological Journal of China Universities(高校地质学报)，2009，15: 263. [7] Kohlstedt D L, Kepler H, Rubie D C. Contrib Mineral Petrol.，1996, 123: 345. [8] Bell D R，Rossman G R. Science，1992, 255: 1392. [9] Bell D R，Rossman G R. Contrib Mineral Petrol.，1992, 111: 161. [10] Matsyuk S S, Langer K, Hosch A. Contrib Mineral Petrol.，1998, 132: 163. [11] Khisina N R, Wirth R. Phys. Chem. Miner.，2002, 29: 98. [12] Matsyuk S S，Langer K. Contrib Mineral Petrol.，2004, 147: 413. [13] Libowitzky E，Beran A. Phys. Chem. Miner., 1995, 22: 387. [14] Miller G H, Rossman G B, Harlow G E. Phy. Chem. Miner., 1987, 14: 461. [15] WENG Shi-fu(翁诗甫). Fourier Transform Infrared Spectrometry Analyses(傅里叶变换红外光谱分析). Beijing: Chemical Industry Press(北京：化学工业出版社)，2010. 325. [16] PENG Wen-shi, LIU Gao-kui(彭文世，刘高魁). The Infrared Spectra of Minerals(矿物红外光谱图集). Beijing: Science Press(北京：科学出版社)，1982. 385. [17] Farmer V C. The Infrared Spectra of Minerals(矿物的红外光谱). YING Yu-pu, WANG Shou-song, LI Chun-geng, et al(应育浦，汪寿松，李春庚，等译). Beijing: Science Press(北京：科学出版社)，1982. 112～118, 262. [18] LIANG Wan-xue, ZHANG Zheng-gang, WEN Lu，et al(梁婉雪，章正刚，闻 辂，等). The Infrared Spectra of Minerals(矿物红外光谱学). Chongqing: Chongqing University Press(重庆：重庆大学出版社)，1988. 81. [19] Robert J L, Ventura G D, Welch M D, et al. Am. Mineral., 2000, 85: 926. [20] Matveev S, Stachel T. Geochimica et Cosmochimica Acta, 2007, 71: 5528. [21] Matveev S, Stachel T. Lithos., 2009, 112S: 36. [22] Langer K, Platonov A N, Matsyuk S S, et al. Eur. J. Mineral, 2002, 14: 1027. [23] Kudoh Y. Phys. Chem. Miner., 2002, 29: 387. [24] Pealier A H, Luhr J F. Earth and Planetary Science Letters, 2006, 242: 302. [25] Stripp G R, Field M, Schumacher J C, et al. J. Metam. Geol., 2006, 515.
