| The paper confirmed the stratigraphic distribution of the gold deposits are related to the Archeozoic strata, buried igneous rocks, north east trending structures, as well as gold and silver ring structure lead geochemical anomalies based on ore mineralization factors of Xiaoshan district’s correlation test. Confirmed that the distribution of gold polymetallic deposits in the region with the Lanshugou group, Caojiayao adamellite, Jianlihe granite, concealed igneous rocks, north east trending structures, the NW structure, the ring structure and gold silver-lead geochemical anomalies with high affinity.The article analyzes the fluid inclusions, stable isotope characteristics, metallogenic age in this area, combined with the coupling relationship of the geological evolution of the thermal structure and mineralization events, analyzes the genesis, That the formation of Xiaoshan district gold deposit is a multi-stage, multi-genesis of hydrothermal gold-polymetallic deposits, mainly through the activation of alloying elements migrate in the regional metamorphism, in Indochina-Yanshan orogeny, forming orogenic gold deposit. Main mineralization Xiaoshan area is due to the Indo Yanshan orogenic collision extensional regime after the Xiaoshan metamorphic core complex evolution, mantle fluid and metamorphic fluids, magmatic fluid mixing, along deep fault passage to a mine and part of the north-east north-trending fault filling and precipitated mineralization at the right physical and chemical conversion interface. On this basis, a metallogenic model and metallogenic prediction model is to be build, and draw a diagram mineralization potential method based on the weight of evidence analysis and features by MORPAS platform, showed abnormal area matches highly with the existing distribution of veins and further research area.Following the basic principles, the paper has circled the beneficial metallogenic prospect areas of Gold polymetallic ore by the weight of evidence analysis, features analysis and mineralization coefficient analysis on MORPAS platform. According to the metallogenic probability and considering the actual geological conditions and field survey, the paper has in fact gotten the end result after merging some targets. Finally, the paper circled 3 class A and 5 class B,and 4 class C districts for Gold polymetallic ore beneficial metallogenic prospect areas.The paper has collected a large nummer of data about the study area. and establish the corresponding database, summarizes the regional metallogenic regularity, confirmed the ore-prospecting criteria, has been clear about the prospecting direction in this area. |
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