缅甸硬玉岩中硬玉矿物的结构水表征
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摘要
本文介绍了名义上无水的辉石族矿物中结构水的研究现状,特别是硬玉矿物的结构水红外表征和含量。且笔者以缅甸硬玉岩为研究对象,使用显微红外光谱、电子探针等测试手段,从微观角度研究其中硬玉矿物的结构水表征。研究结果表明:缅甸硬玉岩中硬玉矿物的结构水在红外光谱中主要表征为3 610~3 620 cm-1和3 540~3 550cm-1两个区域的吸收峰,且结构疏松的硬玉岩中硬玉矿物的结构水含量呈现外侧多中间少,结构致密的硬玉矿物的结构水含量各部位较为均一。结构水的含量差异和变化趋势可能是硬玉岩形成时板块俯冲和折返过程中的流体参与作用的结果,进一步为缅甸硬玉岩成因提供了的佐证。
This paper describes the research status of constitutional water in nominally anhydrous pyroxene group minerals, especially the FTIR characterization and content of constitutional water of jadeite in different rocks. The jadeite minerals from Myanmar were investigated by using micro- FTIR and electron microprobe analysis( EPMA),and the constitutional water characterization of jadeite minerals from Myanmar was studied microcosmically. According to the results achieved, the constitutional water of jadeite minerals from Myanmar is characterized by spectral peaks in the range of 3 610 ~ 3 620 cm- 1and 3 540 ~ 3 550 cm- 1on the infrared spectra, the content of constitutional water of jadeite minerals in loose structure jade is higher on the outer side and less in the middle, and the constitutional water content in various parts of jadeite minerals with compact structure is fairly homogeneous. Content difference and change trend of constitutional water are not affected by its chemical composition, and probably result from such factors as fluid involvement in diagenesis, jade forming stage and plate subduction and exhumation process. The results achieved by the authors provide a certain basis for the genetic study of Myanmese jade.
This paper describes the research status of constitutional water in nominally anhydrous pyroxene group minerals, especially the FTIR characterization and content of constitutional water of jadeite in different rocks. The jadeite minerals from Myanmar were investigated by using micro- FTIR and electron microprobe analysis( EPMA),and the constitutional water characterization of jadeite minerals from Myanmar was studied microcosmically. According to the results achieved, the constitutional water of jadeite minerals from Myanmar is characterized by spectral peaks in the range of 3 610 ~ 3 620 cm- 1and 3 540 ~ 3 550 cm- 1on the infrared spectra, the content of constitutional water of jadeite minerals in loose structure jade is higher on the outer side and less in the middle, and the constitutional water content in various parts of jadeite minerals with compact structure is fairly homogeneous. Content difference and change trend of constitutional water are not affected by its chemical composition, and probably result from such factors as fluid involvement in diagenesis, jade forming stage and plate subduction and exhumation process. The results achieved by the authors provide a certain basis for the genetic study of Myanmese jade.
引文
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Fan Xiaoyu,Wu Xiuling,Meng Dawei,et al.2007.Water in UHP jadeite quartzites of dabie mountains:evidence from Micro-FTIR[J].Earth Science Journal of China University of Geosciences,32(2):167~174(in Chinese with English abstract).
Harlow G E and Sorensen S S.2010.Jade(nephrite and jadeitite)andserpentinite:Metasomatic connections[J].International Geology Review,47:113~146.
Liu Yan,Deng Jun and Wang Lihua.2006.The application of severatypes of large-scale exactitude equipments in the identification ojadeite[J].Spectroscopy and Spectral Analysis,26(3):577~582(in Chinese with English abstract).
Qiu Zhili,Wu Fuyuan,Yang Shufeng,et al.2008.Age and genesis ozircon U-Pb ages and Hf isotopic constraints to form the Burma jad[J].Chinese Science Bulletin,53(24):3 104~3 111.
Shi Guanghai and Cui Wenyuan.2004.Textures and microstructures oMyanmar jadeitite:implications for formation of jadeitic Fei-ts'u[J].Journal of Gems and Gemmology,6(3):8~11(in Chineswith English abstract).
Shi Guanghai,Cui Wengyuan,Cao Shumin,et al.2008.Ion microprobzircon U-Pb age and geochemistry of the Myanmar jadeitite[J]Journal of the Geological Society,165:221~234.
Wang Rong and Zhang Baoming.2011.The water area of Southern Chinolive in Cenozoic basaltic xenoliths[J].Scientia Sinica,41(6):832~844(in Chinese with English abstract).
Xia Qunke,Chen Daogong and Zhi Xiachen.2011.Research progress instructural water in nominally anhydrous mantle minerals[J].Advancein Earth Sciences,14(5):452~457(in Chinese with English abstract).
Zheng Yongfei.2004.Fluid activity of deep continental subduction exhumation process[J].Chinese Science Bulletin,49(10):917~929(in Chinese with English abstract).
崔文元,施光海,杨富绪,等.2000.一种新观点——翡翠新的岩浆成因说[J].宝石和宝石学杂志,2(3):16~21.
樊孝玉,吴秀玲,孟大维,等.2007.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,32(2):167~174.
刘琰,邓军,王丽华.2006.大型光谱仪器在翡翠检测中的应用[J].光谱学与光谱分析,26(3):577~582.
施光海,崔文元.2004.缅甸硬玉岩的结构与显微构造:硬玉质翡翠的成因意义[J].宝石和宝石学杂志,6(3):8~11.
王蓉,张保民.2011.华南地区新生代玄武岩中橄榄岩包体的含水性[J].中国科学:地球科学,41(6):832~844.
夏群科,陈道公,支霞臣.1999.名义上无水的地幔矿物中结构水的研究进展[J].地球科学进展,14(5):452~457.
郑永飞.2004.深俯冲大陆板块折返过程中的流体活动[J].科学通报,49(10):917~929.
Fan Xiaoyu,Wu Xiuling,Meng Dawei,et al.2007.Water in UHP jadeite quartzites of dabie mountains:evidence from Micro-FTIR[J].Earth Science Journal of China University of Geosciences,32(2):167~174(in Chinese with English abstract).
Harlow G E and Sorensen S S.2010.Jade(nephrite and jadeitite)andserpentinite:Metasomatic connections[J].International Geology Review,47:113~146.
Liu Yan,Deng Jun and Wang Lihua.2006.The application of severatypes of large-scale exactitude equipments in the identification ojadeite[J].Spectroscopy and Spectral Analysis,26(3):577~582(in Chinese with English abstract).
Qiu Zhili,Wu Fuyuan,Yang Shufeng,et al.2008.Age and genesis ozircon U-Pb ages and Hf isotopic constraints to form the Burma jad[J].Chinese Science Bulletin,53(24):3 104~3 111.
Shi Guanghai and Cui Wenyuan.2004.Textures and microstructures oMyanmar jadeitite:implications for formation of jadeitic Fei-ts'u[J].Journal of Gems and Gemmology,6(3):8~11(in Chineswith English abstract).
Shi Guanghai,Cui Wengyuan,Cao Shumin,et al.2008.Ion microprobzircon U-Pb age and geochemistry of the Myanmar jadeitite[J]Journal of the Geological Society,165:221~234.
Wang Rong and Zhang Baoming.2011.The water area of Southern Chinolive in Cenozoic basaltic xenoliths[J].Scientia Sinica,41(6):832~844(in Chinese with English abstract).
Xia Qunke,Chen Daogong and Zhi Xiachen.2011.Research progress instructural water in nominally anhydrous mantle minerals[J].Advancein Earth Sciences,14(5):452~457(in Chinese with English abstract).
Zheng Yongfei.2004.Fluid activity of deep continental subduction exhumation process[J].Chinese Science Bulletin,49(10):917~929(in Chinese with English abstract).
崔文元,施光海,杨富绪,等.2000.一种新观点——翡翠新的岩浆成因说[J].宝石和宝石学杂志,2(3):16~21.
樊孝玉,吴秀玲,孟大维,等.2007.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,32(2):167~174.
刘琰,邓军,王丽华.2006.大型光谱仪器在翡翠检测中的应用[J].光谱学与光谱分析,26(3):577~582.
施光海,崔文元.2004.缅甸硬玉岩的结构与显微构造:硬玉质翡翠的成因意义[J].宝石和宝石学杂志,6(3):8~11.
王蓉,张保民.2011.华南地区新生代玄武岩中橄榄岩包体的含水性[J].中国科学:地球科学,41(6):832~844.
夏群科,陈道公,支霞臣.1999.名义上无水的地幔矿物中结构水的研究进展[J].地球科学进展,14(5):452~457.
郑永飞.2004.深俯冲大陆板块折返过程中的流体活动[J].科学通报,49(10):917~929.