辽宁桑皮峪透闪石玉的振动光谱学及产地鉴别标志
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摘要
辽宁省岫岩县位于华北克拉通(NCC)东北部,区域内存在较为丰富的蛇纹石玉和透闪石玉矿床,且开发历史久远。桑皮峪透闪石玉是近年来新发现的一处新矿床,以含有丰富石墨包裹体为特征。通过红外光谱、拉曼光谱、X射线粉末衍射、紫外-可见光谱及电子探针显微分析等测试手段对该产区不同种类的透闪石玉进行研究。结果表明,桑皮峪透闪石玉与标准透闪石玉的光谱一致,其主要矿物组成为透闪石,并含有石墨、方解石、蛇纹石、磷灰石、绿帘石等次要矿物或副矿物。结合化学成分和光谱特征,墨(黑)绿色样品颜色是由石墨包裹体所致。此外,拉曼光谱和X射线粉晶衍射技术对透闪石玉中石墨包体的研究,可对透闪石玉鉴别和产地来源提供必要指示。
Liaoning Province which in the northeastern part of the North China Craton (NCC) hosts several serpentine jade as well as tremolite jade (nephrite) deposits and the deposits exploitation has a long history.Here we investigated the Sangpiyu tremolite jade deposit where the relationship between abundant graphite inclusions within the jade remains enigmatic.Based on the test methods such as infrared spectroscopy,laser Raman spectroscopy,X-ray diffraction,UV-visible spectroscopy,electron probe microanalysis,and so on,the mineral components,spectroscopy characteristics were systematically studied in the papers.The results showed that the spectra of the tremolite jade in Sangpiyu are consistent with that of the standard tremolite jade,and the main mineral components are tremolite with minor mineral or accessory mineral such as graphite,calcite,serpentine,apatite and epidote.Combining chemical compositions and spectral characteristics,the colour of dark green (black green) sample is caused by graphite inclusions.In addition,laser Raman spectroscopy and X-ray diffraction techniques were used to study graphite inclusions in tremolite jade,which provide necessary indications for the identification and origin of tremolite.
Liaoning Province which in the northeastern part of the North China Craton (NCC) hosts several serpentine jade as well as tremolite jade (nephrite) deposits and the deposits exploitation has a long history.Here we investigated the Sangpiyu tremolite jade deposit where the relationship between abundant graphite inclusions within the jade remains enigmatic.Based on the test methods such as infrared spectroscopy,laser Raman spectroscopy,X-ray diffraction,UV-visible spectroscopy,electron probe microanalysis,and so on,the mineral components,spectroscopy characteristics were systematically studied in the papers.The results showed that the spectra of the tremolite jade in Sangpiyu are consistent with that of the standard tremolite jade,and the main mineral components are tremolite with minor mineral or accessory mineral such as graphite,calcite,serpentine,apatite and epidote.Combining chemical compositions and spectral characteristics,the colour of dark green (black green) sample is caused by graphite inclusions.In addition,laser Raman spectroscopy and X-ray diffraction techniques were used to study graphite inclusions in tremolite jade,which provide necessary indications for the identification and origin of tremolite.
引文
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[22]谷娴子,丘志力,李银德,等.西汉狮子山楚王陵出土玉器中的石墨包裹[J].中山大学学报(自然科学版),2007,46(6):141-142
[23]Wopenka B,Pasteris J D H.Structural characterization of kerogens to Granulite-facies Graphite-applicability of Raman microprobe spectroscopy[J].American Mineralogist,1993,78(5):533-557.
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[25]熊德信,孙晓明,翟伟,等.云南大坪金矿含金石英脉中高结晶度石墨包裹体:下地壳麻粒岩相变质流体参与成矿的证据[J].地质学报,2006,80(9):1 448-1 456.
[2]Zhang Z W,Gan F X,Cheng H S.PIXE analysis of nephrite minerals from different deposits[J].Nuclear Instruments and Methods in Physics Research B,2011,269(4):460-465.
[3]廖任庆,朱勤文.中国各产地软玉的化学成分分析[J].宝石和宝石学杂志,2005,7(1):25-30.
[4]王柏宇,陈华,张勇,等.湖南临武绿色软玉的宝石矿物学特征[A].珠宝与科技-中国国际珠宝首饰学术交流会论文集[C],2017.
[5]杨晓丹,施光海,刘琰,等.新疆和田黑色透闪石质软玉振动光谱特征及颜色成因[J].光谱学与光谱分析,2012,32(3):681-685
[6]陈全莉,徐亚兰,艾苏杰,等.青海青玉的振动光谱特征[J].光谱学与光谱分析,2014,34(8):2 017-2 020.
[7]王时麒,赵朝洪,于洸,等.中国岫岩玉[M].北京:科学出版社,2007.
[8]蒋天龙.辽宁桑皮峪软玉宝石矿物学特征研究[D].北京:中国地质大学,2014.
[9]吴之瑛,王时麒,凌潇潇.辽宁岫岩县桑皮峪透闪石玉的玉石学特征与成因研究[J].岩石矿物学杂志,2014(S2):15-24.
[10]Zhang C,Yu X Y,Jiang T L.Mineral association and graphite inclusions in nephrite jade from Liaoning,Northeast China:Implications for metamorphic conditions and ore genesis[J].Geoscience Frontiers,2018.
[11]迟广成,肖刚,伍月,等.X射线粉晶衍射仪在大理岩鉴定与分类中的应用[J].岩矿测试,2014,33(5):698-705.
[12]张跃峰,丘志力,彭淑仪,等.辽宁岫岩透闪石质河磨老玉中石墨的成因及其指示意义[J].中山大学学报(自然科学版),2015,54(2):118-126.
[13]Adamo I,Bocchio R.Nephrite Jade from Val Malenco,Italy:ReviewandUpdate[J].Gems&Gemology,2013,49(2),98-106.
[14]孙丽华,王时麒.加拿大碧玉的矿物学研究[J].岩石矿物学杂质,2014(S1):28-36.
[15]刘晶,崔文元.中国三个产地的软玉(透闪石玉)研究[J].宝石和宝石学杂志,2002,4(2):25-29.
[16]彭文世,刘高魁.矿物红外光谱图集[M].科学出版社,1982.
[17]冯晓燕,陆太进,张辉,等.拉曼光谱分析在软玉颜色评价中的应用[J].矿物岩石,2015,35(1):1-6.
[18]邹天人,陈克樵.和田玉、玛纳斯碧玉和岫岩老玉的产地特征[J].岩石矿物学杂志,2002,21(S1):41-49.
[19]Beyssac O,GofféB,Chopin C,et al.Raman spectra of carbonaceous material in metasediments:a new geothermometer[J].Journal of Metamorphic Geology,2010,20(9):859-871.
[20]Beyssac O,Rouzaud J N,GofféB,et al.Graphitization in a high-pressure,low-temperature metamorphic gradient:a Raman microspectroscopy and HRTEM study[J].Contributions to Mineralogy&Petrology,2002,143(1):19-31.
[21]丘志力,江启运,罗涵,等.辽宁岫岩河磨玉和老玉(透闪石玉)中石墨包体的拉曼光谱及其应用[J].光普及光谱分析,2010,30(11):2 985-2 988.
[22]谷娴子,丘志力,李银德,等.西汉狮子山楚王陵出土玉器中的石墨包裹[J].中山大学学报(自然科学版),2007,46(6):141-142
[23]Wopenka B,Pasteris J D H.Structural characterization of kerogens to Granulite-facies Graphite-applicability of Raman microprobe spectroscopy[J].American Mineralogist,1993,78(5):533-557.
[24]Beny-Bassez C,Rouzaud J N.Characterization of carbonaceous materials by correlated electron and optical microscopy and raman microspectroscopy[J].Scanning Electron Microscopy,1985,1985:119-132.
[25]熊德信,孙晓明,翟伟,等.云南大坪金矿含金石英脉中高结晶度石墨包裹体:下地壳麻粒岩相变质流体参与成矿的证据[J].地质学报,2006,80(9):1 448-1 456.