【摘要】 本文通过分析平泉县洼子店金矿区碾子沟矿段的成矿地质条件,认为Cu、Pb、Zn、Au、Ag矿化与围岩关联不明显,而与构造有密切关系,岩体内异常组合Mo、Bi、W、Mn、Hg、Au、Cu、Ag主成矿元素与Au、Cu相关性较高,激电异常峰值较明显的点异常由埋藏较浅的隐伏矿体所引起。矿化特征主要为细脉浸染状金(铜)矿化、接触带上金(银)矿化、斑岩中的浸染状金矿化以及地表风化残积型金矿化;矿体似层状,稳定;以黄铁矿为主,呈具自形-半自形-它形粒状结构、交代结构、填隙结构、碎裂结构等结构,以浸染状构造为主,有益、有害元素含量均微少。经历了早期磁铁矿-钛铁矿阶段,热液活动的黄铁矿阶段,形成以黄铜矿-方铅矿-闪锌矿为主,伴生少量辉铜矿、砷黝铜矿为主的硫化物阶段,之后形成细脉状、浸染状硫化物矿石,在压扭性构造活动期下,构造热液使岩石发生蚀变并伴有金矿形成。更多还原

【Abstract】 Based on the analysis of the metallogenic geological conditions of the ore section,it is considered that the mineralization of Cu,Pb,Zn,Au and Ag is not related to the surrounding rock,but closely related to the structure.The main metallogenic elements of the anomalous assemblage Mo,Bi,W,Mn,Hg,Au,Cu and Ag in the rock mass are highly correlated with Au and Cu.The point anomaly with obvious peak value of IP anomaly is caused by the buried shallow concealed ore body.Mineralization is characterized by veinlet disseminated gold(copper)mineralization,contacted zone gold(silver)mineralization,disseminated gold mineralization in porphyry and surface weathering residual gold mineralization;ore bodies are layered and stable;pyrite is the dominant mineral with automorphic-semi-automorphic-isomorphic granular structure,metasomatic structure,filling structure and fragmental structure,and disseminated structure is the dominant one,which is beneficial and useful.The content of harmful elements is slight.After the early magnetiteilmenite stage and the hydrothermal pyrite stage,chalcopyrite-galena-sphalerite is formed,accompanied by a small amount of chalcopyrite and arsenopyrite-dominated sulfide stage,and then veinlet and disseminated sulfide ores are formed.During the compressive-torsional tectonic active stage,the tectonic hydrothermal fluid altered the rock and accompanied by the formation of gold deposits.更多还原