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现代地质 ›› 2009, Vol. 23 ›› Issue (3): 490-496.

• 矿床与矿物学 • 上一篇    下一篇

湘黔地区下寒武统黑色岩系型镍钼矿床中重晶石标型特征研究

江永宏1,2   

  1. 1中国地质调查局发展研究中心 情报室,北京100037; 2中国地质大学 地质过程与矿产资源国家重点实验室,北京100083
  • 收稿日期:2008-06-12 修回日期:2009-04-15 出版日期:2009-06-20 发布日期:2011-12-21
  • 作者简介:江永宏,男,助理研究员,1973年出生,矿物学、岩石学、矿床学专业,主要从事地质调查、矿床成因矿物学与生命成因矿物学研究。E-mail:jackycat@sina.com。
  • 基金资助:

    国家自然科学基金项目(40073012);国家重点基础研究发展规划项目(G1998040800);中国地质调查局国土资源大调查项目(199910200264, 20001020223023, 200313000068-02)

Typomorphism Characteristic Research of Barite in the Black-Rock-Series-Type Ni-Mo Deposits in the Lower Cambrian in Hunan-Guizhou Area

JIANG Yong-Hong1,2   

  1. 1Department of Information, Development and Research Center of China Geological Survey, Beijing100037, China;
     2State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing100083, China
  • Received:2008-06-12 Revised:2009-04-15 Online:2009-06-20 Published:2011-12-21

摘要:

采用电子探针和硫同位素分析法,对湘黔地区黑色岩系型镍钼矿床中2个样品的重晶石标型特征进行了研究。贵州遵义中南村和湖南张家界柑子坪的重晶石化学成分特征为:Cr2O3、NiO、SiO2含量高,分别为0.39%、0.96%、0.65%;而Al2O3含量低,仅为0.15%以下。w(Sr)/w(Ba)比值变化在0.011~0.034之间。湖南张家界柑子坪的重晶石中硫同位素值为54.3‰~57.4‰。重晶石的成分、同位素等标型特征的研究均反映了重晶石的热水成因。

关键词: 湘黔地区, 黑色岩系, 重晶石, 标型特征

Abstract:

Applying the electron microprobe and sulfur isotope analysis methods, the paper makes research into the typomorphism features of the barite of the two samples in the black-rock-series Ni-Mo deposits in Hunan and Guizhou area.The barite chemical component features of Zhongnancun in Zunyi, Guizhou and Ganziping in Zhangjiajie, Hunan are as the following: contents of Cr2O3, NiO, and  SiO2 are relatively high, 0.39%, 0.96%, and 0.65%, respectively; and the content of Al2O3 is relatively low, below 0.15%.The Sr/Ba values vary from 0.011 to 0.034.The δ34S  values measured from the samples of Ganziping of Zhangjiajie in Hunan vary from 54.3‰ to 57.4‰.The study of typomorphism features of the barite, such as its composition and isotope, reflects the hydrothermal genesis of the barite.

Key words:  Hunan-Guizhou area, black rock series, barite, typomorphism

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