关键词: 找矿预测 地质模型 锡多金属矿床

Abstract: Baxiang Jinkeng ore concentration area in the northern ore concentration area of Lianhuashan integrated exploration area,is one of the tin polymetallic mineralization concentration areas in the southwest section of Lianhua Mountain,Guangdong Province.In recent years,great progress has been made in tin polymetallic ore exploration in this area,and a largescale tin polymetallic ore deposit with a mediumsized and prospective prospect has been found in Jinkeng tin,copper,lead zinc and silver.By using the metallogenic model of Jinkeng deposit,the tin zinc deposit in the Northern Cross Road of the ore concentration area is located The evaluation also made a major breakthrough.Combined with the investigation results of 1∶50 000 mineral resources in the area,there is still a large potential for exploration in the ore concentration area.It is of great significance to study the relationship between tin polymetallic ore and metallogenic geological body,metallogenic structure and metallogenic structural plane,and to summarize the characteristics of mineralization.The study on the "Trinity" metallogenic characteristics of typical tin polymetallic deposits in the area shows that there are mainly three types of tin polymetallic mineralization: filling metasomatic type controlled by dynamic metamorphic belt,porphyry type and post magmatic hydrothermal filling type.The oreforming geological body is the late Jurassic Early Cretaceous intermediate acid intrusive rock mass and vein.The oreforming structural system is the fault structural system related to the northeast Lianhuashan fault in the DapuHuilai structural magmatic belt of the southeast coast.Theoreforming structure and structuralplane are mainly ne,NW and NNE faults and the slip and interlayer fracture planes in the ductile shear belt.On the basis of summarizing the characteristics of tin polymetallic ore mineralization and the elements of prospecting and prediction,the geological model of prospecting and prediction for tin polymetallic ore in this area is preliminarily established.

Key words: Prospecting and prediction,Geological model, Tin polymetallic deposit