| 河南不同成因类型铝土矿的矿石特征 |
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| 引用本文： | 陈廷臻,张天乐.河南不同成因类型铝土矿的矿石特征[J].矿物学报,1989,9(1):89-94. |
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| 作者姓名： | 陈廷臻 张天乐 |
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| 作者单位： | 河南省地质科研所 郑州
(陈廷臻)，中国地质科学院矿床研究所 北京
(张天乐)，贵州省地质矿产局 贵阳(廖士范) |
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| 摘 要： | 本文在对铝土矿石物质组成研究的基础上,运用电子显微镜(EM)对河南两类不同类型铝土矿床的矿石结构进行了观察研究。根据EM观察到的铝土矿石显微结构的不同形貌特征,划分出三种矿石结构类型:致密-隐晶结构、粒状镶嵌结构和粒屑结构。由此归结为两个成因类型:古风化壳异地堆积亚型和古风化壳原地堆积亚型的铝土矿床。
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| 关 键 词： | 铝土矿 古风化壳 显微结构 河南 |
CHARACTERISTICS OF BAUXITE ORES OF VARIOUS GENETIC TYPES FROM HENAN PROVINCE |
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| Chen Tingzhen,Zhang Tianle,Liao Shifan Henan Institute of Geology,Zhengzhou Institute of Mineral Deposits,Chinese Academy of Geosciences,Beijing Guizhou Bureau of Geology and Mineral Resources,Guiyang.CHARACTERISTICS OF BAUXITE ORES OF VARIOUS GENETIC TYPES FROM HENAN PROVINCE[J].Acta Mineralogica Sinica,1989,9(1):89-94. |
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| Authors: | Chen Tingzhen Zhang Tianle Liao Shifan Henan Institute of Geology Zhengzhou Institute of Mineral Deposits Chinese Academy of Geosciences Beijing Guizhou Bureau of Geology and Mineral Resources Guiyang |
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| Abstract: | Based on the study of the chemical composition of bauxite ores, the ore fa-bric of two genetic types of bauxite deposits in Henan Province have beenexamined under the electron microscope. Differences noticed in their microtextu-res and morphologic features permit us to divide these bauxite ores into threetextural types: (1) compact-aphanitic; (2) granular-mosaic; and(3) granular-fragmental. Thereby, the bauxite deposits can be assigned to two broad types:the palaeo-weathering 'crust-allochthonous accumulation subtype and the palaeo-weathering crust-autochthonous accumulation subtype. |
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| Keywords: | bauxite microstructure ancient weathering crust Henan |
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