| 豫西北地区铝土矿地质特征及找矿方向 |
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| 引用本文： | 孙越英,王兴民.豫西北地区铝土矿地质特征及找矿方向[J].地质找矿论丛,2006,21(3):191-194. |
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| 作者姓名： | 孙越英 王兴民 |
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| 作者单位： | 河南省地质矿产勘查开发局,第二地质队,河南,焦作,454002 |
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| 摘 要： | 豫西北地区铝土矿均为一水硬铝石型沉积矿床,赋存于中石炭统本溪组.铝土矿含矿岩系的物源主要来自碳酸盐岩的红土风化壳,矿层厚度、矿石结构构造及矿体产状的变化均受古岩溶地貌控制,含矿岩系应属滨海-湖沼相沉积;溶斗型铝土矿小而富,主要分布在豫北地区;层状、似层状铝土矿规模大、品位高,主要分布于豫西地区;豫西的新安、渑池、三门峡、陕县一带和豫北的沁阳、博爱北部是下一步铝土矿的找矿重点区.
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| 关 键 词： | 河南省西北部 铝土矿 地质特征 矿床成因 找矿方向 找矿标志 |
| 文章编号： | 1001-1412-（2006）03-0191-04 |
| 收稿时间： | 2005-05-13 |
| 修稿时间： | 2005-09-19 |
THE GEOLOGICAL CHARACTERISTICS AND BAUXITE ORE SEARCHING DIRECTIONS IN NORTHWEST HENAN PROVINCE |
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| SUN Yue-ying and WANG Xing-min.THE GEOLOGICAL CHARACTERISTICS AND BAUXITE ORE SEARCHING DIRECTIONS IN NORTHWEST HENAN PROVINCE[J].Contributions to Geology and Mineral Resources Research,2006,21(3):191-194. |
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| Authors: | SUN Yue-ying and WANG Xing-min |
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| Institution: | The Second Geological Brigade, Henan Province Geological Survey bureau, Jiaozuo 454002,China |
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| Abstract: | Bauxite ore in the Northwest Henan province is generally sedimentary diaspore type in Benxi Formation of Carboniferous Series. Material sources of the bauxite ore-bearing sequence are mainly derived from lateritic weathering crust of carbonate rocks. Thickness of ore layers, texture and structure of ore, occurrence of ore bodies and the change are controlled by palaeo-karst topography. The ore-bearing sequence is littoral-lagoon sedimentary facies. Funnel type bauxite ore deposits are in small size and high grade occurring mainly in the north Henan province. Layer and layeroid bauxite deposits are in large size and high grade occurring in the west Henan province. Xinan, Mianchi, Sanmenxia and Shanxian areas in the west Henan province and Qinyang, Boai areas in the north Henan province are the key targets for further bauxite ore exploration in future. |
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| Keywords: | northwest Henan province bauxite geological characteristics genesis of bauxite deposit ore-searching direction ore marks |
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