Study On Structure Of Ore-controlling And Deep Prediction Of Linglong Gold Deposits

The Linglong ore-field is the most important gold base in China.The Linglong granite can be found in most areas and the quaternary also can be found in some areas in the ore-field.Faults is the main ore-controlling elements.There are two types of ore,one is altered rock type which another is quartz vein type.Both the formation and distribution are strictly controlled by faults.Based on the predecessors'work,through intensive field investigation,collecte large number of rock samples,use the theory of petrology,structural geology,regional metallogeny,metallogenic predictions,combine with the method of computer data processing and drawing,start from the regional geological setting,the writer focou on studying the structrue of ore-controlling and metallogenic depth.Through the research,the author summarizes the metallogenic regularity.Following results obtained by studying:1)The main ore-controlling structure is the fault.Faults can be divided into three categories according to their scale.The gradeâ… controlling faults controls the distribution of deposits,the gradeâ…¡controls the distribution of the main ore body and the gradeâ…¢controlling faults controls the distribution of branch ore.2)The distribution of ore types controlled by the nature and type of faults.Altered rock-type ore formation in the area under the pressure plate side of the shear fracture zone,while quartz vein type ore formed in tension cracks which under the pressure plate side of the shear fracture zone.3)By microscope observation of rock microstructure characteristics,the author find that the deformation is dominated by ductile deformation in Taishang deposit and brittle deformation in Linglong deposit.4)Use the structure-correction method to measure the depth of mineralization,the author recognize that the Taishang gold deposit is a shallow deposit which mineralization depth is 3,500 meters.5)Through large-scale mapping of structure-deformated-pertrofacies features,combine with the actual data and previous research results,,the author comprehensive analysis that there are considerable amount of resources in Linglong gold deposits.