Geological Features And Resource Estimation In Heilongjiang Binnan Molybdenum Deposit

This thesis is based on the research project of Binnan molybdenum mine in Heihe city,Heilongjiang province.The geological work unit is the geological survey place of Heilongjiang province.The purpose is to build a mine for its rigorous and important geological data.Field work time: November 2013-August 2014,the main physical work completed: geological drilling 7550.25 m,350 m hydrogeology drilling,pit 1115 m3,3825 pieces of basic analysis of samples,1 piece and comprehensive experimental laboratory research related samples.The total cost of geological prospecting is about 11 million yuan.The exploration degree and quality meet the detailed design requirements,and basically meet the requirements of mine construction design.The main achievements are as follows:(1)the Binnan molybdenum deposit occurs in late Jurassic cataclastic altered in the fine grain of granodiorite,framed and 38 molybdenum ore body is like a layered ore bodies,lenticular,vein,overall north east to distribution,north west,about 15 ~ 35 ° Angle.The length of the deposit is 1200 m,and the width of the deposit is 500 m.Each ore body is a few meters to 70 meters thick,basically is the blind ore body,the ore material composition is the molybdenum ore,pyrite mainly.(2)the granite diorite(I type granite)of the Binnan molybdenum deposit is formed in the tectonic environment of the continental margin in the late Jurassic(155.5 + 1.5 Ma).The metallogenic epoch of the deposit is the late Jurassic-early cretaceous(142.9 + + 5.1 Ma).Source of ore-forming materials have the feature of magma source material,its cause of formation is from late Jurassic-early cretaceous strata area occurred in the earth's crust delamination effect so that the upwelling of the asthenosphere material and a wide range of stretch of the earth's crust.(3)using the general industrial index to explore molybdenum resources(as of April 30,2017): total estimated industrial and low-grade molybdenum metal resources(332+333)23168.28 tons,average grade 0.056%.Estimated industrial molybdenum metal resources(332+333)14556.54 tons,average grade 0.080%,of which 332 types of metal 436.42 tons,average grade 0.072%,333 types of metal 14120.42 tons,average grade 0.080%;332 types of resources accounted for 3% of 332+333 types of resources.Estimated low grade molybdenum metal resources(332+333)8611.75 tons,average grade 0.037%,among which 332 types of metal 1106.21 tons,average grade 0.037%,333 types of metal 7505.54 tons,average grade 0.037%;332 types of resources accounted for 12.9% of the 332+333 types of resources.(4)this thesis mainly adopts the segment method to evaluate # ore body,? ?industrial ore bodies,low grade molybdenum metal resources,and then use section method to extract the seven segment for testing its feasibility.