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| GEOLOGICAL CHARACTERISTICS OF BAUXITE DEPOSIT IN THE DEEP OF YANLONG OREFIELD IN HENAN PROVINCE |
| LI Jian-quan1, ZHOU Hong-chun1, CAO Gao-she2, ZHANG Qing1, CHEN Guang1, CHEN Yong-cai1, YANG Yuan-yuan1 |
1. No. 4 Institute of Geological Exploration, Henan Bureau of Geology and Mineral Exploration and Development, Zhengzhou 450001, China;
2. College of Earth and Environment Sciences, Henan Polytechnic University, Jiaozuo 454003, Henan Province, China |
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Abstract The Yanlong bauxite deposit, which occurs in Carboniferous Benxi Formation on the Middle Ordovician erosion surface, is a typical concealed bauxite deposit in western Henan Province. The thickness of ore-bearing formation and shapes of bodies are controlled by the paleo-karst erosional surface, and are greatly influenced by structures. The dominant Al-bearing minerals include diaspore, kaolinite and illite. The upper and lower parts of the bauxitic mudstone are mainly based on kaolinite and illite respectively. The paragenetic minerals of bauxite have a great value, while the associated minerals need further study.
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Received: 20 October 2015
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2016, Vol. 25 
