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| 来自蛇绿岩地幔的硫（砷）化物矿物组合 | |
| 引用本文： | 白文吉,陶淑凤,杨经绥,方青松,施倪承,李国武.来自蛇绿岩地幔的硫（砷）化物矿物组合[J].岩石矿物学杂志,2007,26(5):418-428. |
| 作者姓名： | 白文吉 陶淑凤 杨经绥 方青松 施倪承 李国武 |
| 作者单位： | 1. 中国地质科学院,地质研究所,国土资源部,大陆动力学重点实验室,北京,100037 2. 北京矿冶研究院,北京,100044 3. 中国地质大学,X射线晶体结构实验室,北京,100083 |
| 摘 要： | 近来在西藏雅鲁藏布江蛇绿岩带的罗布莎蛇绿岩块的地幔豆荚状铬铁矿中发现一个包括金刚石、柯石英、自然元素、合金、氧化物以及硫(砷)化物组成的地幔矿物群。该矿物群的硫(砷)化物具有特殊化学成分并呈包裹体分布在贱金属(BM)和铂族元素(PGE)或它们的合金中,大量化学成分分析得知它们主要由下列元素组成:S、As、Te、Fe、Ni、Co、Cu、Pt、Pd、Ru、Rh、Os、Ir、Mn和Ti。根据化学成分可辨别出约30种硫(砷)化物矿物:FeS、NiS、(Ni,Fe)S、Fe3S2、Ni3S2、(Ru,Os,Ir)S2、Rh7As3、Rh5Ni(Cu)As4、Pd4Rh3As3、Pd8As2、Pd3TeAs、Pd7Te3、RuAs、PtAs2、Ni4Rh3As3、Rh(As,S)2、(Rh,Ir)(As,S)2、Ir(As,S)2、MnS、Ti7S3、Ti7N3、Rh3.5Se3.5CuS2、RhS、Ir2S3、(Ir,Cu)2、S3(Co,Ni,Fe)2(As,S)3、(Ir,Pt)(As,S)2、Ru3(As,S)7以及(BM)x(PGE)yS10-(x y)等,其中包括已定名和未定名的矿物。由于矿物粒度小(<25μm),缺乏X射线分析资料,有待进一步研究。 |
| 关 键 词： | 西藏 蛇绿岩 地幔 铬铁矿 硫(砷)化物 |
| 文章编号： | 1000-6524（2007）05-0418-11 |
| 修稿时间： | 2007-05-23 |
A mineral assemblage of sulfides and sulfo-arsenides from the ophiolite mantle in Tibet |
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| BAI Wen-ji,TAO Shu-feng,YANG Jing-sui,FANG Qing-song,SHI Ni-cheng,LI Guo-wu.A mineral assemblage of sulfides and sulfo-arsenides from the ophiolite mantle in Tibet[J].Acta Petrologica Et Mineralogica,2007,26(5):418-428. | |
| Authors: | BAI Wen-ji TAO Shu-feng YANG Jing-sui FANG Qing-song SHI Ni-cheng LI Guo-wu |
| Institution: | 1. Key Laboratory for Continental Dynamics of Ministry of Land and Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China; 2. Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China; 3.China University of Geosciences, Beijing 100083, China |
| Abstract: | Recentl,a mantele mineral assemblage consisting ofdiamond,coesite, Si-rutile,native elements,alloys,oxides,sulfides and sulfo-arsenides was found in chromitite of Luoobusa ophiolite in the Yarlung Zangboophiolite zone,Tibet.The sulfides and sulfo-arsenides with specific compositions occur as inclusions inbasemetal and PGE alloys.Based onchemical analyses,the authors have found that the elements comprising the minerals are mainly S,Ar,Te,Fe,Ni,Co,Cu,Pt,Pd,Os,Ir,Mn and Ti.Thirty different sulfide and sulf-arsenides mineral species in chromitite of the Luobusa podiform chromitite were identified,which include named and unnamed minerals: FeS,NiS,(Ni,Fe)S,Fe3S2,Ni3S2,(Ru,Os,Ir)s2,RuS2,Rh7As3,Rh5Ni(Cu)As4,Pd4Rh3As3,Pd8As2,Pd3Te3As,Pd7Te3,RuAs,PtAs2,Ni4Rh3As3,Rh(As,S)2,RuS2, Rh7As3,, Rh5Ni(Cu)As4, Ed4Rh3As3, Pd8As2, Pd3Te3As, Pd7Te3, AuAs, PtAs2, Ni4Rh3As3, Rh(As, S)2, (rh, Ir)(As, S)2, Ir(As, S)2, MnS, Ti7S3, Ti7N3, Rh3.5Se3.5cuS2, RhS, Ir2S3, (Ir, Cu)2S3, (co, Ni, fe)2(As, s)3, (Ir, Pt)(As, S)2, Ru3(As, S)7 and (BM)x(PGE)yS10-(x+y. As mineral crystals are too small(<25 um), and X-Ray analytical data remain very insufficient for unnamed minerals, much research work remains to be done in future. |
| Keywords: | Tibet ophiolite mantle chromitite sulfides and sulfo-arsenide |
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