| Based on the analysis and research of the previous work results,this paper starts with the geological characteristics of the deposits in the Jinchuan mining area,and uses the theory and method of petrology,ore deposit,geochemistry,mineralogy and isotope geology to analyze the strata of the mining area.,structure and relationship between magmatic rock and mineralization,summing up ore-controlling factors and metallogenic regularity,have a comprehensive understanding of the genesis of the copper-nickel sulphide deposit in Jinchuan ore field;this paper has conducted indepth and detailed field geological survey on the 58 th ore body.Master a large amount of geological data and put forward a new understanding in the genesis of the deposit.The existing Jinchuan geochemical data was combined with the test data to establish the three-dimensional spatial distribution characteristics of the Jinchuan deposit,and the characteristics of the magma,the magma crystallization and its assimilation and mixing process,and the melting and transport of sulfides were discussed.Migration process;this paper reports the composite sulfur isotope data of Jinchuan deposit for the first time.The specific results are as follows:(1)The newly added 333 resources amounted to 1,480,000 tons,the copper metal amount was 13,100 tons,the nickel metal amount was 17,500 tons,the copper grade was 0.88%,and the nickel grade was 1.18%.The degree of control of the exploration section is further improved.In the past work,the 58#ore body was controlled according to the survey project spacing of 40m×(40-25)m according to the type IV survey.The drilling project further confirmed its extension to the deep part and the pincer-out situation.The ore body has been sharpened near the 1500m elevation(line06),and it is not necessary to find the same type of ore body in the deep part of the58#ore body.(2)The deep concealed low-resistance body of the 04 and 06 coils of the 58# ore body was verified in the previous period,and it was confirmed that the low-resistance body was caused by the ultra-basic ore body.(3)Analyze the genetic type of the exposed ore body,focusing on the contact relationship between the ore body and surrounding rock,the distribution characteristics of various ore types,and the ore grade characteristics.It is preliminarily believed that the ore body and magma melt The genetic type of the 1# ore body of the isolated type III mine is not completely the same,and it has the characteristics of deep magmatic melting-penetrating ore body.(4)Analyzed the spatial position relationship between the exposed ore body and the existing ore body.It is preliminarily believed that this excavation body has nothing to do with the 58# ore body,and it is the extension part of the 1# ore body of the III mining area to the deep part. |
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