云南镇康芦子园铅锌铁多金属矿床矿石组构特征及矿床成因探讨

通过对芦子园铅锌铁多金属矿床进行野外实地考察和典型矿石组构特征的显微鉴定,总结该矿床典型矿石组构特征.主要矿石构造包括:浸染状构造、条带状构造、脉状构造、块状构造、角砾构造等;主要矿石结构包括:结晶粒状结构、交代结构、固溶体分离结构、填隙结构、压碎角砾状结构、揉皱结构、放射状结构等.根据这些矿石组构特征及金属矿物和脉石矿物的组合、类型及自形程度和矿物在空间上的相互关系特征分析,矿区大致可划分为三期:沉积成岩期(初始矿源层形成期)、热液改造成矿期、表生期.初步认为芦子园铅锌铁多金属矿为早期沉积、后期热液改造的热液型矿床.

Discussion on the Characteristics of Texture and Structure of Ores and Genesis of Luziyuan Pb-Zn-Fe Polimetallic Deposit in Zhenkang, Yunnan

By microscopic identification of Luziyuan Pb-Zn-Fe polymetallic deposit field trips and typical ore fabric characteristics,the fabric characteristics of the deposit typical ore are summarized.The main ore structures include disseminated structure,emulsion droplet-like structure,banded structure,vein-like structure,the massive structure,brecciated structure,etc;The main ore textures include crystalline granular texture,the replacement texture,solid solution separation texture,interstitial texture,etc.According to the ore fabric characteristics and metal minerals and gangue mineral combination,type and shape since the degree and mineral in space analysis of characteristics of the relationship,the mining area can be roughly divided into three periods,which are deposit diagenetic stage(primary source bed formation),hydrothermal transformation metallogenic period,and supergene period.It was considered that Luziyuan Pb-Zn-Fe polymetallic deposit is the hydrothermal deposit for early deposition,and late hydrothermal transformation.