Geological Characteristics And Deep Prospecting Prediction Of Gao Guanying Iron Deposits In Eastern Hebei

On the premise of collecting data,through field investigation and indoor research,clarify the strata,structure and magmatic rock characteristics of the mine,find out the orebody distribution,shape,scale,occurrence,thickness and ore quality,using the variation function degree of the change of the grade of iron ore in the area are the comprehensive system analysis,through the magnetic method precision profile fitting for deep orebody is forecasted.The mining area is largely covered by the quaternary system,and only the bedrock is distributed in the Nanshan Residual mountain,which is the black cloud granulite of the third member of The Baimiaozi Formation of the Single Pagoda Subgroup of The Taigu Dynasty and the quartz sandstone of the Great Wall System of the Middle Proterozoic Era,the Dhongyu Formation.The Great Wall system Dhongyu formation is overlying the Paleozoic metamorphic rock series with small Angle unconformity.The Archean metamorphic rock series is a monoclinal structure with an overall strike near north and south and dipping to the west.The larger fault structure in the mining area is the F1 fault fracture zone,and the magmatic rock in the area is not developed.The deposit occurs in the third member of Baimiaozi Formation of The Monta Subgroup of The Archean Dynasty,which can be divided into three ore belts and one independent ore body.The deposit tends to be stratiform and lenticular,and magnetite quartite is the main ore type in the mine area.The ore mineral is mainly magnetite,and the ganguli mineral is mainly quartz.The magnetite is in the shape of allo-semiautogenous granular structure,and it is distributed in the form of aggregation or monomer in the form of striation.According to the width and width of the quartz stripe,the structure of the ore can be roughly divided into fine striated ore,striated ore and banded ore.The average grade of the ore m Fe is 20% ? 30%.The ore body has two stages of mineralization.Although the grade of ore body has no obvious directional change in space and the grade of a few ore body parts shows poor correlation,the grade of the ore body as a whole has gradually stabilized within a certain range.The change of orebody along the direction of strike is a kind of simple and irregular change.Some external factors that affect orebody grade have more or less influence on ore-forming in the mineralization stage.From magnetic fine profile data fitting method shown good results of ground magnetic anomaly is drilling control ore body,ore body occurrence and the connection with magnetic speculated that are consistent,no other undiscovered has a certain scale of ore body,? ore belt,?-2 and ? ore body distribution,scale,occurrence to general control,ore quality have been identified,ore body along the strike and extending the deep in the tilt direction were pointed out,deposit has no vision.Figure 17;Table16;Reference 78...