广东莲花山北部矿集区锡多金属矿床找矿预测*#br#

莲花山整装勘查区北部矿集区—八乡—金坑矿集区是广东莲花山南西段整装勘查区锡多金属矿化集中区之一，近年来该区锡多金属矿找矿取得了重大进展，发现了金坑锡铜铅锌银中型、远景达大型的锡多金属矿床，根据金坑矿床成矿模式，在矿集区北部十字路锡锌矿床评价又获得了重大突破，结合区内1∶50 000矿产调查成果，矿集区内还有较大的找矿潜力。研究锡多金属矿与成矿地质体的关系以及成矿构造和成矿结构面，总结成矿作用特征标志，对该区锡多金属矿找矿预测工作有重要意义。对区内典型锡多金属矿床“三位一体”成矿特征的研究表明，区内锡多金属矿化类型主要有动力变质带控制的充填交代型、斑岩型和岩浆期后热液充填型3种。成矿地质体为晚侏罗世—早白垩世中酸性侵入岩体及岩脉，成矿构造系统为东南沿海大埔—惠来构造岩浆带与NE向莲花山大断裂有关的断裂构造系统，成矿构造及成矿结构面主要为NE、NW、NNE向断裂及韧性剪切带中滑脱、层间破裂面。在归纳锡多金属矿成矿作用特征标志和找矿预测要素的基础上，初步建立了该区锡多金属矿的找矿预测地质模型。

Prospecting and Prediction of Tin Polymetallic Depost in the Ore concentrated Area in the North of Lianhua Mountain in Guangdong Province

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.