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AbstractAbstract
[en] The author analyses and concludes the main geological characteristics of Mengshan caldera and its control over uranium metallogenesis in area No. 670; demonstrates that the ore-hosting volcanic rocks are derived from the crust-mantle mixed source and mainly from the crustal source; approaches the uranium source, physicochemical condition of uranium metallogenesis and its formulation process in the uranium deposit of the area. It is considered that uranium deposit in this area can be synthesized into the genetic model of uraniferous hydrothermal solution of postmagmatic volcanic magma remelted from the uranium-enriched basement, its ore-forming materials are derived from the remelted magmatic differentiation and evolution and are precipitated to form the deposit in oxygen-rich, low temperature and tensile volcanic tectonics at near-surface
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