摘要
Abstract
The southern Jiangxi province has abundant tungsten mineral resources,known as the"World Tungsten Capital",where a number of tungsten deposits had been evaluated since 1950s.Because of that ex-posed mineral deposits have been mostly found and mined,it is urgent to explore concealed tungsten resources in China and improve mineral exploration theories and methods.The geologists use geomechanical theory and struc-tural system analysis to guide regional research and exploration of tungsten deposits such as Piaotang,and study the distribution regularity of tungsten-bearing veins,which shows characters of directional and equidistant on the horizontal plane,and branched or layered shape in the vertical direction,called"Five layer belt"with five lay-ers orebody.Based on the above model,it was predicted that there would be mineral deposits in the Muziyuan area,which were verified to be a large W-Mo deposit,besides that,Meiziwo tungsten deposit in Guangdong province and others were also found,the"Five layer belt"was renamed as the"Five-storey",which was hailed as the"pioneer of mineral exploration in China and even the world".With the advancement of tungsten exploration,layered quartzite type tungsten deposits and other types parallel to the contacting surfaces of granite have been discovered under the"Five-storey model"such as Huangsha deposit,which represents the loophole of"Five-storey model".In the new round of tungsten resource survey,the author proposed a metallogenic structural system consisting of"Five-storey","Podium","Basement"and"Foundation"based on the research in the eastern Nanling metallogenic belt,highlighting the location of different types of deposits,which re-volves around the granite pluton and the contacting surface between intrusion and wallrock as the symbol,and the mechanical properties and spatial distribution of ore-controlling fractures as the basis,to comprehensively guide the optimization of Nanshan-Liangyuan tungsten ore base in the Guangdong Province,and the successfully explo-ration of different types of deposits,making a sensational breakthrough.Further research demonstrated that the ore-controlling structures are the genesis of magmatic dynamics and exhibit different assemblages.Through the analy-sis of ore-forming factors and formation mechanisms,it is believed that it is formed by the orderly fusion of sur-rounding rocks,structures,magmas,and mineralization factors,which are influenced by regional structures-relat-ed batholith and stock,magmatic dynamics-related fractures,as well as ore-forming factors.关键词
钨矿/"五层楼"/成矿结构体系/岩浆动力成因构造/控矿组合形式/地质力学Key words
tungsten ore/"Five-storey model"/metallogenic structural system/magmatic dynamic genet-ic structure/ore-controlling assemblage/geomechanics分类
地质学
