山东栖霞市虎窝顶矿区金矿地质特征及矿床成因找矿方向

摘要

Huwoding mining zone is located within Jinshan area of Qixia city.The gold deposit here is polymetallic sulphide quartz-vein type which belongs to mesothermal fissure -filling type.With considerable fluctuation in thickness and grade,the medium-sized ore body is mainly stripped and lenticular.Except for minor chalcopyrite, the dominant minerals are pyrite,gelenite and sphalerite.The ores mainly have crystalline -granular and crush textures,and subordinately have intersertal,emulation,poikilitic,mosaic,skeletal and metasomatic relict tex-tures.All these mainly have massive,mesh-vein and disseminated structures,and subordinately brecciated and colloform structures.The ores are primary ones whose surrounding rocks are mostly stripped fine-grained tonalite with hornblende biotite from Neo-archean Huilongkan unit of Qixia super unit.%栖霞市虎窝顶矿区金矿床位于栖霞市金山境内，为多金属硫化物石英脉型金矿床，成因上属于中温热液裂隙充填石英脉型金矿床。矿体以条带状、透镜状为主，矿体规模中等，厚度、品位变化较大，主要矿石矿物有黄铁矿、方铅矿、闪锌矿，少量黄铜矿，矿石结构以晶粒状结构、压碎结构为主，次为填隙结构、乳浊状结构、包含结构、镶嵌结构、骸晶结构、交代残余结构等，矿石构造主要有块状、网脉状、浸染状构造，其次为角砾状构造和胶状构造。矿石类型主要为原生矿石，矿体围岩主要是新太古代栖霞超单元回龙夼单元条带状细粒含角闪黑云英云闪长岩。