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河南禹州地区晚石炭世本溪组蕴藏着丰富的铝土矿资源,其中伴生的镓具有巨大的潜在经济价值。在对研究区铝土矿野外地质调查和室内地化分析基础上,总结了镓的分布规律,探讨了其控制因素。研究表明,在不同铝土矿区的岩石中镓的平均质量分数总体上呈南高北低,在矿体平均厚度最大的P10地区,矿石中的镓高度富集。含矿岩系中镓的分布和铝土矿的关系密切,镓的高值比铝土矿高值的产出层位略低。由于成矿条件不同,造成镓和铝的沉积与分异。由于镓化学性质比铝更活跃,在偏碱性海水影响下,镓优先铝沉积下来,造成镓比铝优先富集。
The late Carboniferous Benxi Formation in Yuzhou area of Henan Province contains abundant bauxite resources, and associated gallium has great potential economic value. Based on the field geological survey and indoor geochemical analysis of bauxite in the study area, the distribution rules of gallium were summarized and its controlling factors were discussed. The results show that the average mass fraction of gallium in the rocks of different bauxite areas is generally high in the south and low in the north, and the gallium in the ore is highly enriched in the region P10 with the largest average thickness of the ore body. The distribution of gallium in ore-bearing rock series is closely related to bauxite, and the high value of gallium is slightly lower than that of bauxite. Due to different metallogenic conditions, gallium and aluminum deposition and differentiation. Due to the more aggressive chemical nature of gallium than aluminum, gallium preferentially deposits under the influence of alkaline water, resulting in preferential enrichment of gallium over aluminum.