Advanceson Metallogenesis of Volcanic-type Uranium Deposits in Gan-Hang Tectonic Belt, Southeast China

The Gan-Hang tectonic belt is a typical volcanic-type uranium mineralization belt. There arecertain extent common features in mineralization ages, ore-controlled characteristics, mineral association and hydrothermal alteration for the uranium deposits in this region.The mineralization fluids are chartered by high temperature, high pressure, middle-high salinity, volatile-bearing and deoxidize and influxing of circulated meteoric water in later stage. The ore-forming mattersare sourced fromuranium-enriched basement and enriched mantle, and the uranium was mainlymigrated astheuranous hybrid complexes in metallogenic stage. The formation of uranium deposits is closely associated with Mesozoic continental hot spots.