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在室温和pH值为中性的开放体系下,选用川滇黔地区与峨眉山玄武岩自然铜矿床相关的不同类型矿物,对配制的铜胶体溶液和Cu2+溶液进行吸附试验,结果表明,矿物对铜胶体和Cu2+的吸附率从高到低分别为硫化物、有机质(沥青)、粘土矿物、硅酸盐矿物。这一实验结果与川滇黔地区自然铜矿的赋矿围岩为玄武质角砾岩、铝土-粘土质沉积岩,自然铜与有机质伴生等地质现象一致,并表明有机质在自然铜成矿作用中不仅提供了还原条件,而且是很好的吸附剂。文章还探讨了与峨眉山玄武岩有关的自然铜矿床中铜的迁移形式:认为铜不仅能以离子或络合物的形式迁移,还可能以纳米粒级单质铜的形式迁移。
Under the open system of neutral temperature and neutral pH, the different types of minerals related to the Emeishan basalt natural copper deposit in Sichuan, Yunnan and Guizhou provinces were selected to conduct the adsorption experiments on the prepared copper colloid solution and Cu2 + solution. The results showed that the mineral adsorption of copper Colloids and Cu2 + adsorption rates from high to low sulfide, organic matter (bitumen), clay minerals, silicate minerals. The results of this experiment are consistent with the geological phenomena that the ore-hosting rocks of natural copper deposits in Sichuan, Yunnan and Guizhou provinces are basaltic breccias, bauxite-clay sediments, and natural copper associated with organic matter, indicating that the organic matter is naturally copper mineralized In not only provides the conditions for the reduction, but also a good adsorbent. The paper also explored the copper migration from natural copper deposits related to the Emei basalts: copper is believed to migrate not only as ions or as complexes, but also as nanoparticulate copper.