广西龙围铅锌矿成矿地质条件、成矿规律及矿床成因研究

广西龙围矿区铅锌矿位于广西上林县明亮镇西北方向,区内探明铅锌矿资源储量目前已达到中型规模,区内含矿地层为泥盆系下统郁江莲花山组,大明山复背斜及F 1断裂为主要控矿构造,共圈定2个铅锌矿体。区内地层岩性为铅锌矿体提供了部分成矿物质;燕山期花岗岩为铅锌矿体成矿母岩,提供了重要成矿物质来源及成矿热液活动;区内褶皱、断裂构造及次级裂隙发育,为铅锌矿体导岩、导矿及容矿构造,提供了良好的通道和赋矿空间。区内赋矿地层单一、断裂构造控矿、成矿物质来源广泛、成矿作用复杂,矿床属中温热液断裂充填型脉状矿床,主要控矿因素为构造、岩浆岩及地层围岩,成矿阶段分为沉积阶段和含矿热液叠加改造阶段,矿床成因为中温热液断裂充填型脉状矿床。

Study on Metallogenic Geological Conditions,Metallogenic Rules and genesis of Longwei Lead-Zinc Deposit in Guangxi

The lead-zinc mine in Longwei mining area is located in the northwest of Mingliang Town,Shanglin County,Guangxi.The proved reserves of lead-zinc resources in the area have reached a medium-sized scale at present.The ore bearing strata in the area are Lower Devonian Yujiang Lianhuashan formation.Damingshan anticline and F 1 fault are the main ore controlling structures,and two lead-zinc ore bodies are delineated in total.The metallogenic regularity in the area is summarized as follows:the lithology of the strata in the area provides part of the ore-forming materials for the lead-zinc ore body;the Yanshanian granite provides the important ore-forming material source and hydrothermal activity for the lead-zinc ore body;the fold,fracture structure and secondary fracture development in the area provide a good channel for the lead-zinc ore body's rock guide,ore guide and ore containing structure Ore hosting space.The ore-bearing strata in the area are single,the fault structure controls the ore,the ore-forming material sources are extensive,and the mineralization is complex.The deposit belongs to the vein type deposit of the middle temperature hydrothermal fracture filling type.The main ore-controlling factors are the structure,magmatic rock and the stratum surrounding rock.The ore-forming stage is divided into the sedimentary stage and the ore-bearing hydrothermal superimposition transformation stage.The deposit is formed because of the vein type deposit of the middle temperature hydrothermal fracture filling type.