福泉市矮蹬地区九架炉组铝土矿、赤铁矿矿床地质特征

福泉矮蹬地区铝土矿、赤铁矿均产于石炭系九架炉组（Cjj）地层中下部,产出层位较稳定,延伸规模大.矿体呈层状、似层状、透镜状产出,产状与地层产状基本一致,矿石品位较高,变化较小.含矿岩系底厚度严格受下伏地层泥盆系上统高坡场组（D3g）厚层白云岩风化壳（喀斯特地貌）起伏控制.将该区铝土矿与修文地区大豆厂九架炉组（Cjj）铝土矿床含矿岩系等进行对比,揭示了本区铝土矿的独特之处.结合九架炉组分布范围、厚度及其变化等,对该区铝土矿资源找矿潜力进行了初步评价,拟为下一步在该区实现铝土矿的找矿突破提供一定的参考.

Geologic Characteristics of Bauxite and Hematite Deposit of Jiujialu Formation in Aideng Area of Fuquan

Both bauxite and hematite deposit in Mdeng area are found in lower Jiujialu formation of Carbo- niferious system, the horizon is stable and the extension is huge. The orebody forms bedded and quasi bedded, the occurrence is lenticular and accordant with the stratum, the grade is high and changes a little. Thickness of ore-bearing rock is controlled by dolomite weathering crust of Gaopochang formation of underlying Devonian system. By compare the bauxite in this area with ore- bearing bauxite deposit of Jiujialu formation in Dadouchang of Xiuwen, peculiarity of bauxite deposit in this area can be found. According to the distribution, thickness and the variation of Jiujialu formation, the exploration potential of the bauxite is assessed and hoped to accord some guidance for bauxite exploration in the future.