The bauxite under coal in Yiyan area is located in the southern margin of the North China platform,which is close to the Xiaoshan-Lushan arch oblique fault bundle in the south and the new depression in Luoy-ang in the north.On the basis of metallogenic geological conditions and ore-controlling factors analysis,it is considered that the bauxite deposit is hosted in the Upper Carboniferous Benxi Formation(under the Permi-an coal measures).The thick and large ore bodies are located in the secondary depression of the basin base-ment.The thickness and grade of the ore bodies are positively correlated with the thickness of the ore-bear-ing rock series.The ore-forming materials of bauxite are derived from the ancient land.The low hilly land-form on the edge of the ancient land basin is conducive to the chemical weathering of aluminum-silicon sepa-ration and the formation of bauxite.Aluminum-bearing rock formation and strata,lithofacies paleogeograph-ic characteristics,symbiotic mineral markers can be used as prospecting indicators in this area.
bauxite under coalmetallogenic regularityprospecting indicatorsYiyangWestern Henan
维普
万方数据
