The Study Of Ore-Controlling Model In Fule Lead-Zinc Deposit,Northeast Yunnan

The purpose of this paper is to analyze the structural features of the surface、division of the sub-structure、and tectonic systems divisionin Fule Lead-Zinc Deposit,northeast Yunnan.On the basis of structural and geochemical characteristics of the study,the relationship between structure and mineralization of further study,will provide an important basis for deepening HZ-type lead-zinc deposits and concealed ore mineralization theory predicted.(1)for mining ore-controlling fracture staging facilities,got four groups of faults and the main group to SN,EW direction,NW direction and NE direction.① draw near SN-trending faults experienced compressive→left shear→right shear twisting of the mechanical properties of transition;② NW trending faults experienced mechanical properties of sinistral shear→ compressive→ tensional(twisting)of changes;③ NE trending faults experienced dextral shear→compressive→tensional(twisting)mechanical properties change.④EW trending structures:the right compressive(twisting)→left twist pressure changes.(2)Through different directions,analyze the different nature of the fracture surface of the structure that Fule Lead-Zinc Deposit has experienced at least three tectonic movement:SN-trending structural zone→NE trending structural zone NW-trending structural zone,which corresponds to the structure of principal stress direction near EW(I period)NW-SE direction(Ⅱ period)→NE-SW direction(Phase Ⅲ).Phase If is the main mineralization tectonic system.(3)Summarizes the structural ore control regularity:middle maokou group and limestone interface between layers is a major fault structure surface mineralization of the deposit;North East to pressure shear layer between the north and south to the intersection of fault and fracture site is occurrence of rich ore body parts;nearly north-south trending fault zone is an important ore guide structure,NE structure is host structures,and EW faults are broken ore structure;(4)Through the R cluster analysis of tectonic faults,systematic study of geochemical characteristics of R-type factor analysis and principal trace elements geochemistry of mine summed up the ore-forming elements and associated elements and their relationship with the geological structure.The faults considered providing transport and storage place for;while forming fluid precipitation Hydrothermal mineralization,redox conditions changed little,but to restore the environment-oriented.(5)By The Fule plants typical lead-zinc deposits and MVT lead-zinc deposits and lead-zinc deposits HZT contrast,that the Fule deposit has the characteristics of HZT lead-zinc deposits.It’s a typical epigenetic hydrothermal deposit,to further build the ore-controlling model.(6)On the basis of a comprehensive study on the proposed mining prospecting flag for rock interface,ore-controlling structure and tectonic geochemical anomalies.Combination of elements which lead-zinc combination of elements and high-temperature hydrothermal exception of concealed orebodies have important implications for forecasting,the abnormal area can be used as one of the next major prospecting.