Nanoparticles Features of Groundwater in Kaxiutata Deposit and Its Significance

In order to get a better understanding of the deep orebody information of Kaxiutata deposit in the Inner Mongolia, the groundwater particles were collected near the mining area. To have a contrast, the well water particles away from the mining area were also collected. It is found that the samples of groundwater in the mining area contain metal particles, and a high resolution transmission electron microscope was used to study these metal-bearing nanoparticles. The anomalous metal particles in the groundwater of this deposit are mainly Fe, Cu and Zn particles. The contents of Zn and Cu particles in the groundwater of the deposit are up to 80.3% and 22.7% respectively, and there are no Ag, Cu particles in the well samples in the background area, and the metal elements in the mining area are much higher than those in the well water. Metal-bearing nanoparticles and deep orebody (magnetite, pyrite, sphalerite, yellow copper ore, etc.) have a good correspondence. It is also proved that the groundwater containing metal particles from the deep orebody can carry the information of the deep orebody, which provides both a new perspective for the exploration of the deep concealed orebody and reference for the future exploration of the same type of deposit as well. In addition, the study also shows that the groundwater near the mining area may be affected by ore-forming particles, which may also affect the quality of underground drinking water, and the research method of groundwater containing metal particles can also be used to detect contamination of underground drinking water.