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豫西渑池县水泉洼铝土矿地质特征及成矿规律

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水泉洼铝土矿位于河南省主要富铝(黏)土矿成矿带西矿带,是探明的中型铝土矿床.通过对矿床成矿地质条件和成矿规律分析后认为,铝土矿的成矿作用主要受古地理、古沉积环境、马家沟组顶部古风化壳构成的盆地基底形态及断裂构造的控制,本溪组为赋矿地层.其成矿规律主要表现为:矿床分布在古陆边缘的盆地边缘,并受沉积相控制;成矿盆地以古风化壳为盆地基底,盆地基底负地形规模越大,所形成的铝土矿矿体规模越大;且矿体在盆地边缘的次级凹陷中富集,这些次级凹陷是古风化壳的负地形.在岩溶、岩坑较发育的盆地边缘和古地势相对较高地区是寻找富铝(黏)土矿的有利地段.
Geological features and metallogenic regularity of the Shuiquanwa bauxite deposit,Mianchi County,western Henan
The Shuiquanwa bauxite deposit located in the western ore belt of the main aluminum(clay)-rich ore metallogenic belt in Henan,which is a proven medium-sized bauxite deposit.Through the analysis of the metallogenic geological conditions and metallogenic regularity of the deposit,it is considered that the miner-alization of bauxite is mainly controlled by the ancient geography,the ancient sedimentary environment,the basin base form composed of the ancient weathering crust at the top of the Majiagou Formation and the fault structure.The Benxi Formation is the ore-bearing strata.The metallogenic regularity is mainly as follows:the deposits are distributed on the edge of the basin on the edge of the ancient land and controlled by sedi-mentary facies,the metallogenic basin is based on the ancient weathering crust.The larger the scale of the negative terrain of the basin basement,the larger the scale of the formed bauxite ore body.And the ore bodies are enriched in the secondary depressions at the edge of the basin,which are the negative topography of the ancient weathering crust.It is a favorable area for prospecting aluminum-rich(clay)ore that karst and rock pits are more developed in the edge of the basinand the ancient terrain is relatively high.

bauxite depositgeological featuresmetallogenic regularityprospecting indicatorsShuiquanwaWestern Henan

谢小芳、马玉见、卢仁、梁涛、曹纪虎

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河南省自然资源科技创新中心[废弃矿山再利用研究],河南郑州 450000

河南省第六地质大队有限公司,河南郑州 450000

河南省地质研究院,河南郑州 450016

铝土矿 地质特征 成矿规律 找矿标志 水泉洼 豫西

河南省两权价款地质勘查项目

2004-07

2024

矿产与地质
桂林矿产地质研究院

矿产与地质

CSTPCD
影响因子:0.42
ISSN:1001-5663
年,卷(期):2024.38(2)
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