豫西地区金钼铅锌银矿集区成矿规律研究

Study on Metallogenic Regularity of Gold,Molybdenum,Lead,Zinc and Silver Ore Concentration Area in Western Henan Province

豫西地区金钼铅锌银矿集区是我国多金属矿产资源的重要产地,属于东秦岭大型成矿带的东段。以金矿床及银铅矿为代表阐述了金钼铅锌银热液矿床的成矿规律(包括分布规律、矿床物质来源、矿床成因及花岗岩的成矿作用等内容),分析了矿床与构造的关系、地层物质组成的关系及与花岗岩之间的关系等,得出矿床的分布具丛聚性,而且矿集区具有小岩体成大矿的规律(金堆城钼矿、南泥湖钼矿、东沟钼矿、文峪金矿、东闯金矿),矿床成矿物质均来源于基底地层。燕山期花岗岩是各种矿产的高温高压热源的提供者,岩浆期后含矿热液为成矿物质向围岩及构造进行广泛充填、交代和沉淀成矿的关键载体。

The gold,molybdenum,lead,zinc and silver deposit area in western Henan Province is an important source of polymetallic mineral resources,which belongs to the eastern Qinling metallogenic belt.Taking gold deposit and silver lead deposit as the representative,this paper expounds the metallogenic law of gold molybdenum lead-zinc silver hydrothermal deposit(including distribution law,deposit material source,deposit genesis and granite mineralization,etc.),analyzes the relationship between the deposit and structure,the relationship between the formation material composition and the relationship between granite.The conclusion is that the distribution of the ore deposit has cluster property,and the ore concentration area has the rule of small rock mass forming large ore(Jinduicheng molybdenum deposit,Nannihu molybdenum deposit,Donggou molybdenum deposit,Wenyu gold deposit,Dongchuang gold deposit),and the ore-forming materials of the ore deposit are derived from basement strata.Yanshanian granite is the source of high temperature and high pressure heat source for various minerals,and post-magmatic ore-bearing hydrothermal fluid is the key carrier for ore-forming materials to carry out extensive filling,metasomatism and precipitation mineralization to surrounding rocks and structures.