云南麻栗坡祖母绿的矿物包裹体特征研究
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摘要
采用偏光显微镜薄片观察、电子探针及背散射图像、阴极发光等方法,分别对伟晶岩矿脉和顺层剪切带矿脉两种产出状态的云南麻栗坡祖母绿进行了系统的包裹体特征研究。结果表明,云南麻栗坡祖母绿具有产地特征的包裹体有黑色镁电气石、含钒的白云母、具有环带的钾长石、毒砂、镁质黑云母、白钨矿包裹体。伟晶岩脉和顺层剪切带中的祖母绿均含有钾长石、钠长石、电气石、萤石、祖母绿(绿柱石)、黑云母、榍石、磷灰石、黄铁矿、绿泥石、绿帘石包裹体。白云母、方解石、石英、锆石、毒砂、闪锌矿、方铅矿、透辉石仅出现在伟晶岩脉中的祖母绿包裹体中;而白钨矿仅出现在顺层剪切带中的祖母绿包裹体中。对云南不同产状祖母绿矿物包裹体的研究不仅对祖母绿的产地鉴定具有宝石学意义,也对揭示云南麻栗坡祖母绿的成因类型具有重要意义。
In this research,mineral inclusions in emeralds from Malipo,Yunnan Province,are studied by polarized microscope,electron probe(EPMA),and cathodoluminescence(CL).The results show that there are several kinds of mineral inclusions which can be considered as origin characteristics in emeralds from Malipo,Yunnan Province,such as black dravite,vanadium muscovite,zonal feldspar,arsenopyrite,magnesium biotite,scheelite.Both in pegmatite veins and shear zone veins,emeralds contain feldspar,albite,dravite,fluorite,emerald(beryl),biotite,sphene,apatite,pyrite,chlorite,epidote.Inclusions only appear in emeralds from pegmatite veins are muscovite,calcite,quartz,zircon,arsenopyrite,sphalerite,galena,diopside.Inclusion only appears in emeralds from shear zone veins is scheelite.This research on different inclusions in emeralds from pegmatite veins and shear zone veins is meaningful not only for emerald identification of origin,but also reveals the genetic type of Yunnan emeralds.
In this research,mineral inclusions in emeralds from Malipo,Yunnan Province,are studied by polarized microscope,electron probe(EPMA),and cathodoluminescence(CL).The results show that there are several kinds of mineral inclusions which can be considered as origin characteristics in emeralds from Malipo,Yunnan Province,such as black dravite,vanadium muscovite,zonal feldspar,arsenopyrite,magnesium biotite,scheelite.Both in pegmatite veins and shear zone veins,emeralds contain feldspar,albite,dravite,fluorite,emerald(beryl),biotite,sphene,apatite,pyrite,chlorite,epidote.Inclusions only appear in emeralds from pegmatite veins are muscovite,calcite,quartz,zircon,arsenopyrite,sphalerite,galena,diopside.Inclusion only appears in emeralds from shear zone veins is scheelite.This research on different inclusions in emeralds from pegmatite veins and shear zone veins is meaningful not only for emerald identification of origin,but also reveals the genetic type of Yunnan emeralds.
引文
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Hu Rongrong.2008.Study on Mineralization Geological Background and Mineralization Model of Emerald Deposits in Yunnan Province[D].Kunming university of science and technology(in Chinese).
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Liu Chunhua,Wu Cailai,Lei Min,et al.2013.The characteristics of microstructure and chemical compositions of K-feldspar,sphene and zircon with zoning structure[J].Spectroscopy and Spectral Analysis,33(8):2 235~2 241(in Chinese).
Xue G,Marshall D,Zhang S,et al.2010.Conditions for Early Cretaceous emerald formation at Dyakou,China:fluid inclusion,Ar-Ar,and stable isotope studies[J].Economic Geology,105(2):339~349.
Zhang Feng,Wang Genhou and An Ran.2009.Characteristics of giant annulus stripe K-feldspar phenocryst of Gangtangcuo granitic pluton in central Qiangtang,northern Tibet,China[J].Geological Bulletin of China,28(9):1 309~1 318(in Chinese).
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Zhou Zuoxia.1986.The origin of intrusive mass in Fengshandong,Hubei province[J].Acta Petrologica Sinica,2(1):59~70(in Chinese).
Zu Endong,Zhang Pengxiang and Zhang Yan.1999.The raman spectroscopy of inclusions of emerald in Yunnan[J].Chinese Journal of Light Scattering,11(3):243~247(in Chinese).
常丽华.2006.透明矿物薄片鉴定手册[M].北京:地质出版社.
东前,杜杨松,曹毅,等.2011.江西武山花岗闪长斑岩中黑云母成分特征及其成岩成矿意义[J].矿物岩石,31(2):1~6.
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姜雪,余晓艳,郭碧君,等.2015.云南祖母绿颜色环带研究[A].中国珠宝首饰学术交流会论文集[C].北京:地质出版社,88~93.
李强.2001.云南麻栗坡祖母绿的宝石学特征[J].宝石和宝石学杂志,3(2):11~14.
刘春花,吴才来,雷敏,等.2013.环带钾长石、榍石和锆石的显微结构与微区组成特征分析[J].光谱学与光谱分析,33(8):2 235~2 241.
张锋,王根厚,安然.2009.藏北羌塘中部冈塘错花岗岩体中环带条纹钾长石巨斑晶的特征[J].地质通报,28(9):1 309~1 318.
郑育宇,余晓艳,姜雪,等.2017.云南祖母绿的宝石学及谱学特征研究[A].中国国际珠宝首饰学术交流会论文集[C].北京:地质出版社,90~94.
周作侠.1986.湖北丰山洞岩体成因探讨[J].岩石学报,2(1):59~70.
祖恩东,张鹏翔,张燕.1999.云南祖母绿中包裹体的拉曼测量[J].光散射学报,11(3):243~247.
Dong Qian,Du Yangsong,Cao Yi,et al.2011.Compositional characteristics of biotites in Wushan granodiorite,Jiangxi province:Implications for petrogenesis and mineralization[J].Journal of Mineral and Petrology,31(2):1~6(in Chinese).
Feng Minggang,Zhang Shitao,LüWei.2000.The characteristics and prospecting direction of the emerald deposit in China[J].Yunnan Geology,19(1):37~42(in Chinese).
Hu Rongrong.2008.Study on Mineralization Geological Background and Mineralization Model of Emerald Deposits in Yunnan Province[D].Kunming university of science and technology(in Chinese).
Jiang Xue,Yu Xiaoyan,Guo Bijun,et al.2015.The study on color bands in emerald crystals from Yunnan Province,China[A].Gemology&Technology[C].Beijing:Geological Publishing House,88~93(in Chinese).
Li Qiang.2001.Gemmological characters of Malipo emerald from Yunnan province[J].Journal of Gems and Gemmology,3(2):11~14(in Chinese).
Liu Chunhua,Wu Cailai,Lei Min,et al.2013.The characteristics of microstructure and chemical compositions of K-feldspar,sphene and zircon with zoning structure[J].Spectroscopy and Spectral Analysis,33(8):2 235~2 241(in Chinese).
Xue G,Marshall D,Zhang S,et al.2010.Conditions for Early Cretaceous emerald formation at Dyakou,China:fluid inclusion,Ar-Ar,and stable isotope studies[J].Economic Geology,105(2):339~349.
Zhang Feng,Wang Genhou and An Ran.2009.Characteristics of giant annulus stripe K-feldspar phenocryst of Gangtangcuo granitic pluton in central Qiangtang,northern Tibet,China[J].Geological Bulletin of China,28(9):1 309~1 318(in Chinese).
Zheng Yuyu,Yu Xiaoyan,Jiang Xue,et al.2017.Gemological and spectral characteristics of emerald from Yunnan,China[A].Gemology&Technology[C].Beijing:Geological Publishing House,90~94(in Chinese).
Zhou Zuoxia.1986.The origin of intrusive mass in Fengshandong,Hubei province[J].Acta Petrologica Sinica,2(1):59~70(in Chinese).
Zu Endong,Zhang Pengxiang and Zhang Yan.1999.The raman spectroscopy of inclusions of emerald in Yunnan[J].Chinese Journal of Light Scattering,11(3):243~247(in Chinese).
常丽华.2006.透明矿物薄片鉴定手册[M].北京:地质出版社.
东前,杜杨松,曹毅,等.2011.江西武山花岗闪长斑岩中黑云母成分特征及其成岩成矿意义[J].矿物岩石,31(2):1~6.
冯明刚,张世涛,吕伟.2000.中国祖母绿矿床特征及其找矿方向[J].云南地质,19(1):37~42.
胡荣荣.2008.云南麻栗坡祖母绿矿床成矿地质背景及成矿模式研究[D].昆明理工大学.
姜雪,余晓艳,郭碧君,等.2015.云南祖母绿颜色环带研究[A].中国珠宝首饰学术交流会论文集[C].北京:地质出版社,88~93.
李强.2001.云南麻栗坡祖母绿的宝石学特征[J].宝石和宝石学杂志,3(2):11~14.
刘春花,吴才来,雷敏,等.2013.环带钾长石、榍石和锆石的显微结构与微区组成特征分析[J].光谱学与光谱分析,33(8):2 235~2 241.
张锋,王根厚,安然.2009.藏北羌塘中部冈塘错花岗岩体中环带条纹钾长石巨斑晶的特征[J].地质通报,28(9):1 309~1 318.
郑育宇,余晓艳,姜雪,等.2017.云南祖母绿的宝石学及谱学特征研究[A].中国国际珠宝首饰学术交流会论文集[C].北京:地质出版社,90~94.
周作侠.1986.湖北丰山洞岩体成因探讨[J].岩石学报,2(1):59~70.
祖恩东,张鹏翔,张燕.1999.云南祖母绿中包裹体的拉曼测量[J].光散射学报,11(3):243~247.