河南省偃龙铝土矿床地球化学特征及成矿物质来源分析
本文以偃龙铝土矿为对象,研究了铝土矿的地球化学特征,讨论了其成矿物质来源。铝土矿含矿岩系中不同矿产的SiO2、Al2O3、Fe2O3、FeO的元素含量变化较大,且总量较高,说明铝土矿在形成过程中,其源岩风化程度较高。Al2O3与SiO2、Fe2O3、K2O含量呈负相关关系,与TiO2、A/S呈正相关关系。含矿岩系明显具有富集轻稀土、亏损HREE的特征,在垂向上,其稀土元素含量较高的是Ce、La、Nd(均为轻稀土),低含量的是Tm、Ho、Eu、Lu。微量元素方面,偃龙铝土矿比山西铝土矿富集的元素有Li、Be、Sc、Ni、Cu、Zn、Zr等稀有金属元素和亲铜元素,而这些元素在贵州大竹园铝土矿中的含...
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Published in | 地质与勘探 Vol. 53; no. 4; pp. 704 - 714 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
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河南省地质矿产勘查开发局第四地质勘查院,河南郑州,450001%河南省地质矿产勘查开发局第三地质矿产调查院,河南郑州,450001%河南省地质矿产勘查开发局第一地质勘查院,河南郑州,450001
2017
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Online Access | Get full text |
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Summary: | 本文以偃龙铝土矿为对象,研究了铝土矿的地球化学特征,讨论了其成矿物质来源。铝土矿含矿岩系中不同矿产的SiO2、Al2O3、Fe2O3、FeO的元素含量变化较大,且总量较高,说明铝土矿在形成过程中,其源岩风化程度较高。Al2O3与SiO2、Fe2O3、K2O含量呈负相关关系,与TiO2、A/S呈正相关关系。含矿岩系明显具有富集轻稀土、亏损HREE的特征,在垂向上,其稀土元素含量较高的是Ce、La、Nd(均为轻稀土),低含量的是Tm、Ho、Eu、Lu。微量元素方面,偃龙铝土矿比山西铝土矿富集的元素有Li、Be、Sc、Ni、Cu、Zn、Zr等稀有金属元素和亲铜元素,而这些元素在贵州大竹园铝土矿中的含量比偃龙铝土矿更富集。偃龙铝土矿的成矿物质来源于基底碳酸盐岩风化残余,在广泛海侵时,残余物质经搬运沉积成矿。 |
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Bibliography: | bauxite, geochemistry, ore - forming material source, Yanlong, Henan Province 11-2043/P LI Jian-quan1, FENG Shuai2 , AN Chao3 , XI Shan-feng1, FENG Fei-fan1, ZHAO Qin1,WANG Zhong-yu1( 1. The Fourth Geological Exploration Institute of Henan Geology and Mineral Bureau, Zhengzhou, Henan 450001 ; 2. No. 3 Institute of Geological & Mineral Resources Survey of Henan Geological Bureau, Zhengzhou, Henan 450001 ; 3. The First Geological Exploration Institute of Henan Provincial Bureau of Geo - exploration and Mineral Depvelopment, Zhengzhou, Henan 450001 ) Taking the Yanlong deposit in Henan Province as the target, this work studied the geochemical characteristics and ore -forming material sources of this bauxite deposit. The results show that the element content of SiO2 , A1203 , Fe203 , and FeO is highly variable, and the total amount is large, which means the weathering degree of provenance rocks was strong during the formation of ore - bearing rock series. The content of Al2O3 has a neg- ative relationship with SiO2, |
ISSN: | 0495-5331 |