Quality assessment of geological environment of ion-absorbed rare-earth mine in Longnan County

Problems such as three wastes, damage of lands and non-standard stacking of residue waste in ion- absorbed rare-earth mines result in the serious deteriorating of ecological environment in Longnan Country. In this paper, the present situation mine environment is analyzed with the typical mine geological environment after rare -earth mining as subject. The environment quality assessment index system and the method of environmental evaluation is built as well. Quality evaluations to the three rare-earth mines of Longnan County are carried out based on this. The results show that the environmental qualities of the three typical mines of Fukeng, Longnan and Guanxi are poor and very poor. The main causes can be attributed to the mining, rock-tailings emissions and mass precipitation. The locale experiment indicates that this work can serve as an important guidance for the environmental management of the rare -earth mines in Longnan County, and has popularizing significance for other rare-earth mines in South China.