广东天堂山铷锡多金属矿床成矿地质特征及其成因

广东天堂山铷锡多金属矿床位于NNE向武夷山多金属成矿带南段与南岭纬向多金属成矿带东端的交汇部位。通过对广东天堂山铷锡多金属矿体的地质特征、成矿特征的研究，查明矿体主要赋存于上侏罗统高基坪群第二亚群火山岩及其构造破碎蚀变带、节理裂隙蚀变带和花岗岩岩体隆起部位，其中侏罗系上统高基坪群第二亚群火山岩岩石主要成矿元素Rb的背景浓度较高，该地层是铷矿（化）体的主要赋矿层位。通过地质特征和地球化学证据认为矿物质来源与火山岩和燕山期岩体有关，区内角岩型铷矿、云英岩型铷矿、钠长石化花岗岩型铌钽矿、构造破碎蚀变带（岩）型锡矿、云英岩型钨锡矿及细脉浸染型锡矿、铅锌矿、铜矿矿床成因是以岩浆期后气成-热液充填交代作用为主的多阶段、多期次成矿的，是在不同的演化阶段、不同的成矿地质条件及不同的部位形成的具成因联系的一组矿床。

Metallogenic Geological Characteristics and Genesis of the Rb-Sn Polymetallic Deposit in Mount Tiantang,Guangdong Province

Tiantangshan Rb-Sn polymetallic deposit in Guangdong Province is located at the intersection of the southern part of the NNE trending Wuyishan polymetallic metallogenic belt and the eastern end of the Nanling latitudinal polymetallic metallogenic belt. Based on the study of the geological and metallogenic characteristics of the rubidium tin polymetallic ore body in Tiantangshan, Guangdong Province, it is found that the ore body mainly occurs in the volcanic rocks of the second subgroup of the upper Jurassic Gaojiping group and its tectonic fracture alteration zone, joint fissure alteration zone and the uplift of granite. The background concentration of Rb is relatively high in the volcanic rocks of the second subgroup of the Jurassic Gaojiping group, This stratum is the main ore bearing horizon of rubidium ore body. Based on geological characteristics and geochemical evidence, it is considered that the source of minerals is related to volcanic rocks and Yanshanian rocks. The genesis of hornblende type rubidium deposit, greisen type rubidium deposit, albitized granite type niobium tantalum deposit, structural fracture alteration zone (rock) type tin deposit, greisen type tungsten tin deposit, veinlet leaching type tin deposit, lead zinc deposit and copper deposit in the area is post magmatic gas hydrothermal filling metasomatism The main multi-stage and multi-stage mineralization is a group of ore deposits with genetic relationship formed in different evolution stages, different metallogenic geological conditions and different parts.