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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
引用本文:江永宏.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[J].现代地质,2009,23(3).
作者姓名:江永宏
作者单位:中国地质调查局发展研究中心,情报室,北京,100037;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
基金项目:国家自然科学基金,国家重点基础研究发展规划(973计划),中国地质调查局国土资源大调查项目 
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

Typomorphism Characteristic Research of Barite in the Black-Rock-Series-Type Ni-Mo Deposits in the Lower Cambrian in Hunan-Guizhou Area
JIANG Yong-hong.Typomorphism Characteristic Research of Barite in the Black-Rock-Series-Type Ni-Mo Deposits in the Lower Cambrian in Hunan-Guizhou Area[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(3).
Authors:JIANG Yong-hong
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.
Keywords:Hunan-Guizhou area  black rock series  barite  typomorphism
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