Abstract:

The geochemical features of primary halo of Liubagou gold deposit are systematically discussed in the paper, using multivariate statistical methods combined with geochemical parameters information; the anomalous features of primary halo are outlined and the axial zoning sequence of elements are established; the extent of denudation is analyzed and the primary halo superimposed model is built. In the western part of Liubagou gold deposit, the front elements are coexistent with the rear elements, and the antizoning of Sb and Bi shows the characteristics of superposition of multistage mineralization, reflecting the existence of blind ore bodies. In the eastern part, the axial zoning sequence is basically normal; the strong fluctuations of geochemical parameters indicate that the blind ore bodies may exist there. While in terms of denudation, the western part ore bodies of the No313 vein has undergone relatively strong erosion, the middle and eastern part have undergone minor denudation. According to the results mentioned above, we predicted that a good mineralization perspective exists in the western part; that for the middle part, the anomalous area is at the elevation of above 1400 m; and that the eastern part is of the best prospect. This study provides important evidence for deep prospecting in the mining district.

Key words:  primary halo, evaluation of deep mineralizing prospect, Liubagou gold deposit, Inner Mongolia