Spatial superposition relationship of uranium polymetallic and uranium metallogenic model in Hetaoba area, Inner Mongolia

Hetaoba area is located in the polymetallic metallogenic belt in the northern margin of North China plate and Guyuan-Hongshanzi uranium metallogenic belt, and has found good uranium and polymetallic mineralization information, which has good prospects for uranium polymetallic exploration. In this paper, the existing exploration results are summarized, and then a series of research work is carried out from the field geological phenomena, macro-laws, micro-characteristics, chronology and geochemistry. The metallogenic regularity and spatial superposition relationship of uranium and lead, zinc and molybdenum polymetallic minerals in Hetaoba area are discussed. lt is considered that polymetallic mineralization and uranium are not formed in the same period, and polymetallic mineralization time is earlier; comparative study with similar regional uranium deposits and uranium mineralization points has been carried out, and uranium metallogenic model in Hetaoba area has been preliminarily summarized. It is considered that uranium metallogenesis is not synchronous with ore-hosting volcanic rocks, and uranium metallogenesis is closely related to a volcanic activity after the formation of ore-hosting volcanic rocks. (authors)