Abstract: Yongfeng area is where the largest fluorite deposit located in Jiangxi province,in order to study the geological signatures and genesis of the fluorite for further development of resource potential,recent reserves verification on the two fluorite deposits in this area,revealed the metallogenic signature as below:①ore body is strongly constrained by NNE/NE fault structures,growth in the contact "spot" between metamorphic basement rocks of Nanhuan System and granite of Yanshan Period.②The rock type is highK calcalkaline adakite.③The relationship of enrichment and depletion between CaF2 and SiO2 are opposite,thus indicate a quantitative depletion of CaF2 due to silicification post mineralization.Resembling remarkably the ore genesis in Mt Wuyi area,metallogenic material such as F,Ca,Si,were offered prime opportunity by both metamorphic and magmatic wallrocks.Hydrothermal fluids,which consist of atmospheric precipitation in an infiltrated downward process plus magma,then heated and initiated upwelling by tectonic stress,in terms of extraction and strainer within wallrock.Finally,precipitation and enrichment along with favorable position in fault structures,allow fluorite deposits of lowtemp hydrothermal filling type been formed.